Division Use grouping, sharing, dividing and calculating skills. Practise formal algorithms without remainders and extend to 3 digits divided by a 1–digit divisor. Pictorial representation, formal working, number wheels, problem solving, completing grids, patterning and true and false statements reinforce the division concept. The activity page is a colouring puzzle which involves recognition of 7 as a divisor with no remainder. There are two assessment pages. 61 Targeting Maths © Blake Publishing 2012 MP Operations, Patterns and Algebra pp041-080.indd 61 30/03/12 12:20 PM Middle Primary Division BLM CONTENT UNIT 1 Grouping Multiplication Use signs Use number lines CONTENT DESCRIPTIONS Number and place value: ACMNA075 Recall multiplication facts up to 10 × 10 and related division facts. Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. © Australian Curriculum, Assessment and Reporting Authority 2012 Proficiency strands Understanding: • Multiplication facts are related to division facts. Fluency: • Use grouping as a division strategy. • Use knowledge of multiplication facts to solve division problems. • Use sharing as a division strategy. • Use a number line as a division strategy. • Use signs in division number sentences. • Model and explain patterns in number facts. LANGUAGE sharing, groups of, division, sign, remainder, equal, left over, repeated, subtraction, regrouped MATERIALS counters, blank paper, Base 10 materials, coloured pencils 62 Targeting Maths © Blake Publishing 2012 MP Operations, Patterns and Algebra pp041-080.indd 62 • materials needed for each BLM 1.1 Grouping – circling groups; colouring; sharing with counters. • coloured pencils, counters 1.2 Equal rows – draw diagrams (arrays) to show division and multiplication connected. • counters 1.3 Number sentences – write number sentences for division and multiplication. 1.4 Number lines to divide – count by multiples and use them to answer division problems. 1.5 Use signs – use signs to make a number sentence; use multiplication to check division. 1.6 Use multiplication – more use of multiplication to check addition 1.7 Assessment 1.8 Division – dividing by 7 and colouring Remember Before starting ensure each student: • has a sharp B or 2B pencil. • reads problem solving questions twice. • checks answers. • uses a ruler when setting questions out formally. * 30/03/12 12:20 PM Division Unit 1 ADDITIONAL ACTIVITIES • Draw number lines. Start at the large number being divided and then subtract back the number that is shared. 21 ÷ 3 = 7 • Use a pack of playing cards to play sharing games. • Make 2 dice numbered 4–9. Each player throws the dice and finds the product of the two numbers rolled. The highest score wins. Play in small groups. • A clock face can be used to help count in lots of five. • Take ten lots of hundred squares. Colour all the multiples of 3 one colour, 4 another colour and so on. Allow students to see the patterns forming. ANSWERS (cont.) 3 4, 8, 12, 16, 20, 24, 32, 36, 40 a 5 b 6 c 9 d 7 4 a 8, 3, 0, 5, 30 b 8, 10, 3, 16, 11 c 2, 4, 42, 9, 8 d 4, 70,90,60, 100 e 40, 56, 72, 80, 8 5 a 7 b 3 c 4 d 5 e 24 f $5 6 Teacher check BLM 1.5 1 All answers are ÷ = 2 a 42 ÷ 6 = 7 b 9÷3=3 c 21 ÷ 7 = 3 d 36 ÷ 6 = 6 e 10 ÷ 2 = 5 f 28 ÷ 4 = 79 g 45 ÷ 5 = 9 h 6÷6=1 i 32 ÷ 8 = 4 3 a ÷,× b ÷,÷ c ÷,× d ÷,+ e ÷,+ f ÷,÷ 4 Teacher check 5 b 24 ÷ 6 = 4, 6 × 4 = 24 c 33 ÷ 3 = 11, 3 × 11 = 33 d 27 ÷ 9 = 3, 3 × 9 = 27 BLM 1.6 ANSWERS BLM 1.1 1 a 5 2 a 7 3 a 7 b 8 b 24, 6 b 6 c 10 c 30, 6 d 9 BLM 1.2 1 Teacher check 2 a 9 × 4 = 36, 4 × 9 = 36 b 5 × 10 = 50, 10 × 5 = 50 c 4 × 7 = 28, 7 × 4 = 28 d 7 × 9 = 63, 9 × 7 = 63 e 9 × 5 = 45, 5 × 9 = 45 f 9 × 8 = 72, 8 × 9 = 72 BLM 1.3 1 b c d e f g h 2 a c e 40 ÷ 5 = 8; 8 × 5 = 40, 5 × 8 = 40 9 ÷ 3 = 3; 3 × 3 = 9 70 ÷ 10 = 7; 7 × 10 = 70, 10 × 7 = 70 36 ÷ 4 = 9; 4 × 9 = 36, 9 × 4 = 36 35 ÷ 5 = 7; 7 × 5 = 35, 5 × 7 = 35 21 ÷ 3 = 7; 7 × 3 = 21, 3 × 7 = 21 18 ÷ 2 = 9; 9 × 2 = 18, 2 × 9 = 18 12 teams of 2 b 8 teams of 3 6 teams of 4 d 4 teams of 6 3 teams of 8 f 2 teams of 12 BLM 1.4 1 3, a 2 5, a 6, 9, 12, 15, 18, 21, 24, 27, 30 7 b 4 c 6 10, 15, 20, 25, 30, 35, 40, 45, 50 5 b 7 c 10 1 a c e g i 2 a c e g i 3 a e i 4 a c e g, 4 × 4 = 16 3 × 10 = 30 5 × 12 = 60 10 × 10 = 100 4 × 8 = 32 27 ÷ 3 = 9 30 ÷ 6 = 5 40 ÷ 5 = 8 14 ÷ 2 = 7 45 ÷ 5 = 9 36 b 81 63 f 8 80 j 48 27 ÷ 3 = 9 33 ÷ 3 = 11 32 ÷ 8 = 4 h, i Teacher check BLM 1.7 1 a 56 ÷ 7 = 8 2 a 4 b 4 e 5 f 6 i 8 j 6 3 a 27 ÷ 3 = 9 4 a 12, 12 × 2 = 24 c 7, 7 × 5 = 35 e 11, 11 × 3 = 33 5 3 × 7 = 21, 7 × 3 = 21, b d f h 4 3 6 3 b d f h 28 36 49 24 c g k b d f 21 d 36 36 h 18 55 l 56 90 ÷ 9 = 10 60 ÷ 12 = 5 45 ÷ 9 = 5 × × × × 7 6 7 5 ÷ ÷ ÷ ÷ = = = = 7 4 7 3 28 18 42 15 = = = = 4 9 7 8 b 28 ÷ 7 = 4 c 4 d 3 g 3 h 2 k 4 l 7 b $300 ÷ 10 = $30 b 8, 8 × 3 = 24 d 7, 7 × 3 = 21 f 2, 9 × 2= 18 21 ÷ 3 = 7, 21 ÷ 7 = 3 BLM 1.8 d 9 d 8 A clown – Teacher check 63 Targeting Maths © Blake Publishing 2012 MP Operations, Patterns and Algebra pp041-080.indd 63 30/03/12 12:20 PM Grouping Division 1.1 Name Date You will need coloured pencils and counters. 1 Use different colours to make equal groups. Complete the word and number sentences to record results. a b 5 in each group 4 in each group ♥ ♥♥ ♥ ♥♥ ♥♥ ♥ ♥ ♥ ♥ ♥♥ ♥ ♥ ♥ ♥ ♥♥ ♥ ♥ ♥ ♥ ♥ There are _____ groups of 5 hearts. There are _____ groups of 4 squares. 25 ÷ 5 = _____ 32 ÷ 4 = _____ c 3 in each group ★★★ ★ ★★★ ★★ ★ ★★ ★★ ★ ★ ★★ ★ ★★★ ★★ ★★ ★★ ★★ d 2 in each group ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ There are _____ groups of 3 stars. There are _____ groups of 2 triangles. 30 ÷ 3 = _____ 18 ÷ 2 = _____ 2 Complete the sentences below. b a Groups of 4 Groups of 3 o o oo ✓ ✓ ✓ ✓ ✓✓✓ ✓ o o ooo ✓✓ ✓ ✓ ✓✓✓ ✓✓ o ooo oo ✓ ✓✓ ✓ ✓✓✓ oo oooo c Groups of 5 ×××××××××× ×××××××××× ×××××××××× 21 shared between _____ shared between _____ shared between 3 equals _____ . 4 equals _____ . 5 equals _____ . 3 Use counters to help you solve these sharing problems. a 28 counters shared among 4 people equals ______ b 36 counters shared among 6 people equals ______ 64 Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Fluency: Use grouping as a division strategy. Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 64 30/03/12 12:20 PM Equal Rows Name Division 1.2 Date You will need counters. 1 Arrange each group in rows using counters. Draw them. Under each drawing write a number sentence. a 36 arranged in 4 equal rows b 50 arranged in 5 equal rows c 28 arranged in 7 equal rows _____ ÷ _____ = _______ _____ ÷ _____ = _______ _____ ÷ _____ = _______ d 63 arranged in 9 equal rows e 45 arranged in 5 equal rows f 72 arranged in 9 equal rows _____ ÷ _____ = _______ 2 _____ ÷ _____ = _______ _____ ÷ _____ = _______ Write two multiplication number sentences to describe each of the arrays. a ___________________________________ ___________________________________ b ___________________________________ ___________________________________ c ___________________________________ ___________________________________ d ___________________________________ ___________________________________ e ___________________________________ ___________________________________ Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Understanding: Multiplication facts are related to division facts. Fluency: Use grouping as a division strategy. Use knowledge of multiplication facts to solve division problems. 65 Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 65 30/03/12 12:20 PM Division and Multiplication Name Division 1.3 Date You will need counters. 1 Solve these problems using your counters. Show that division is the opposite of multiplication. The first one has been done for you. 6 24 ÷ 4 = 6 a How many groups of 4 in 24? 4 × 6 = 24, 6 × 4 = 24 b How many groups of 5 in 40? _____ c Share 9 pencils among 3 boys. _____ d Share 70 balls among 10 children. _____ e How many groups of 9 in 36? _____ f Share 35 lollies among 5 girls. _____ g How many groups of 3 in 21? _____ h How many groups of 2 in 18? _____ 2 __________ _______________ _______________ __________ _______________ _______________ __________ _______________ _______________ __________ _______________ _______________ __________ _______________ _______________ __________ _______________ _______________ __________ _______________ _______________ There are 24 children in my class. Use a symbol for each child (say J) and show my class divided into teams of 2, 3, 4, 6, 8 and 12. (JJJ, JJJ, JJJ, JJJ shows 4 teams of 3 children.) a Teams of 2: b Teams of 3: c Teams of 4: d Teams of 6: e Teams of 8: f Teams of 12: 66 Number and place value: ACMNA075 Recall multiplication facts up to 10 × 10 and related division facts. Understanding: Multiplication facts are related to division facts. Fluency: Use knowledge of multiplication facts to solve division problems. Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 66 30/03/12 12:20 PM Number Lines to Divide Name 1 Division 1.4 Date Write the multiples of 3. 3 30 Use this number line to find how many threes in: a 21 ________ 2 b 12 ________ c 18 ________ d 27 ________ Write the multiples of 5. 5 10 Use this number line to find how many fives in: a 25 ________ 3 b 35 ________ c 50 ________ d 40 ________ c 36 ________ d 28 ________ Write the multiples of 4. 4 12 Use the number line to find how many 4s in: a 20 ________ 4 Complete: a N ÷3 b 24 ________ bL c B ÷6 24 32 12 9 40 24 0 12 15 44 d K ÷ 10 e A 40 ÷8 5 7 7 9 9 54 6 10 48 10 7 4 10 5 ÷4 64 a 42 pop-sticks, 6 bundles. __________ pop-sticks in each bundle. b 27 choc-bars, 9 children. __________ choc-bars for each child. c 16 kilometres, 4 hours to walk. __________ km walked each hour. d 25 eggs collected for the week, 5 hens. __________ eggs laid by each hen. e 48 jelly bubbles, 2 bags. __________ jelly bubbles in each bag. f $15 to spend in 3 days. __________ to spend each day. Number and place value: ACMNA076 Develop efficient multiplication strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Understanding: Multiplication facts are related to division facts. Fluency: Use a number line as a division strategy. 67 Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 67 30/03/12 12:20 PM Use Signs Division 1.5 Name 1 2 3 4 5 68 Date Place the ÷ sign and the = sign in the squares so that each number sentence is correct. a 48 6 8 b 100 10 10 c 18 2 9 d 55 5 11 e 63 9 7 f 14 7 2 g 25 5 5 h 56 7 8 i 36 12 3 Include the division sign, equal sign and the answer. a 42 6 ____ b 9 3 ____ c 21 7 ____ d 36 6 ____ e 10 2 ____ f 28 4 ____ g 45 5 ____ h 6 6 ____ i 32 8 ____ Use trial and error. Write a sign on the ___, the answer in the make the sides balance. and a 32 ___ 4 = 4 ___ 2 b 6 ___ 2 = 12 ___ 4 c 50 ___ 5 = 5 ___ 2 d 21 ___ 3 = 4 ___ 3 e 28 ___ 4 = 4 ___ 3 f 36 ___6 = 18 ___ 3 Make some of your own division number sentences. a ___ ___ ___ b ___ ___ ___ c ___ ___ ___ d ___ ___ ___ e ___ ___ ___ f ___ ___ ___ g ___ ___ ___ h ___ ___ ___ i ___ ___ ___ Use multiplication tables to check that you have divided correctly. The first one has been done for you. a 15 ÷ 3 = 5, 5 × 3 = 15 b 24 ÷ 6 = ___ , 6 × ___ = 24 c 33 ÷ 3 = 11, ___ × ___ = ___ d 27 ÷ 9 = ___ , ___ × 3 = ___ Number and place value: ACMNA075 Recall multiplication facts up to 10 × 10 and related division facts. Understanding: Multiplication facts are related to division facts. Fluency: Use knowledge of multiplication facts to solve division problems. Use signs in division number sentences. Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 68 30/03/12 12:20 PM Use Multiplication Division 1.6 Name 1 Date What multiplication fact will help you to answer each division? a 16 ÷ 4 ______________ b 28 ÷ 7 ______________ c 30 ÷ 10 ______________ d 18 ÷ 3 ______________ e 60 ÷ 12 ______________ f 42 ÷ 6 ______________ g 100 ÷ 10 = ______________ h 15 ÷ 5 ______________ 2 3 4 i 32 ÷ 8 ______________ What division fact will you know if you know each multiplication? a 3 × 9 ______________ b 7 × 4 ______________ c 6 × 5 ______________ d 4 × 9 ______________ e 5 × 8 ______________ f 7 × 7 ______________ g 2 × 7 ______________ h 3 × 8 ______________ i 9 × 5 ______________ Fill in the boxes. a ÷6=6 b e ÷7=9 f i ÷ 8 = 10 j c ÷7=3 d ÷ 3 = 12 ÷2=4 g ÷4=9 h ÷2=9 ÷6=8 k ÷ 5 = 11 l ÷ 1 = 56 ÷9=9 Read each story and write a division number sentence to represent each one. Write your own story for g, h, and i. ÷ = a 27 hockey players in 3 teams b 90 books to be placed equally on 9 shelves ÷ = c 33 children in 3 equal classes ÷ = d 60 oranges for 12 children on camp ÷ = e 32 bottles to be placed equally in 8 boxes ÷ = f 45 flowers arranged in 9 vases equally ÷ = g ___________________________________________________________ h ___________________________________________________________ i ___________________________________________________________ 75 ÷ 5 = 15 84 ÷ 4 = 21 56 ÷ 8 = 7 Number and place value: ACMNA075 Recall multiplication facts up to 10 × 10 and related division facts. Understanding: Multiplication facts are related to division facts. Fluency: Use knowledge of multiplication facts to solve division problems. 69 Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 69 30/03/12 12:20 PM Assessment • Division Name 1 Date How many groups of seven are there in each box? Circle each group and write the number sentence below. a b ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥ ♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥ ♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥ ♥♥♥♥♥♥♥♥♥ 56 ÷ ____ = ____ 2 3 Division 1.7 28 ÷ ____ = ____ Complete: a 12 ÷ 3 = ______ b 20 ÷ 5 = ______ c 16 ÷ 4 = ______ d 30 ÷ 10 = ______ e 25 ÷ 5 = ______ f 18 ÷ 3 = ______ g 18 ÷ 6 = ______ h 10 ÷ 5 = ______ i 40 ÷ 5 = ______ j 36 ÷ 6 = ______ k 32 ÷ 8 = ______ l 14 ÷ 2 = ______ Read the division problems and write the number sentences for each one to help you solve them. a There were twenty-seven presents under the Christmas tree for the three Neale children. How many presents did each of the children receive when they shared them equally? _____ ÷ _____ = _____ b Ten people shared a $300 Lotto win equally. How much money did each person receive? _____ ÷ _____ = _____ 4 Show another way of writing the division problem using multiplication. a 24 ÷ 2 = _____ , _____ × _____ = _____ b 24 ÷ 3 = _____ , _____ × _____ = _____ c 35 ÷ 5 = _____ , _____ × _____ = _____ d 21 ÷ 3 = _____ , _____ × _____ = _____ e 33 ÷ 3 = _____ , _____ × _____ = _____ f 18 ÷ 9 = _____ , _____ × _____ = _____ 5 Write two division number sentences and two multiplication number sentences for this array. ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ 70 _____________________ _____________________ _____________________ _____________________ Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 70 30/03/12 12:20 PM Activity • Division Division 1.8 Name Date Colour all the parts which can be divided by 7. What can you see? 20 54 15 30 17 12 37 32 28 42 44 10 21 54 63 49 21 47 9 35 7 63 58 35 60 5 14 56 69 37 49 62 8 28 64 47 48 7 71 39 56 44 26 21 7 12 63 70 27 1 4 14 35 7 42 70 63 28 70 67 20 50 63 57 24 56 70 40 18 42 27 24 67 16 56 60 54 49 14 51 71 Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 71 30/03/12 12:20 PM Middle Primary Division BLM CONTENT UNIT 2 Problem solving Formal working Two steps Checking by × Patterns CONTENT DESCRIPTIONS • materials needed for each BLM 2.1 Sharing – sharing; number sentences • counters 2.2 Formal division – use the formal algorithm to set out division problems. 2.3 Division algorithms – use formal setting out to solve division of tens. 2.4 Problem solving – authentic situations where division is used to work answers Number and place value: ACMNA075 Recall multiplication facts up to 10 × 10 and related division facts. 2.5 Patterns and problems – division patterns use multiples in reverse order; solve word problems. Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. 2.6 Two steps – solve problems which consist of working out two steps in number sentences; related multiplication; problems with formal setting out © Australian Curriculum, Assessment and Reporting Authority 2012 Proficiency strands Understanding: • Multiplication facts are related to division facts. Fluency: • Use various strategies, including partitioning, to solve division problems. • Use signs in division number sentences and in formal setting out. • Compare answers to number sentences. • Recall division facts up to 100. Problem solving: • Relate a word problem to a number sentence. Reasoning: • Use knowledge of number facts to check answers. LANGUAGE sharing, groups of, division, sign, remainder, repeated subtraction, grouping, equal, formal, working out MATERIALS counters, blank paper 72 Targeting Maths © Blake Publishing 2012 MP Operations, Patterns and Algebra pp041-080.indd 72 2.7 Assessment Remember Before starting ensure each student: • has a sharp B or 2B pencil. • reads problem solving questions twice. • checks answers. • uses a ruler when setting questions out formally. * 30/03/12 12:20 PM Division Unit 2 ADDITIONAL ACTIVITIES • • Divide a class of students into two equal groups. One group has calculators and the other doesn’t. Give division questions and have a race to see which group answers the questions the fastest and has most correct. Divide your class into as many even teams as possible. If this is not possible, talk about the fact that some numbers are prime numbers and cannot be divided evenly into groups. ANSWERS (cont.) BLM 2.5 1 a b c d e f 2 a c 3 a e 48, 40, 32, 24, 16, 8 27, 24, 21, 18, 15, 12, 9, 6, 3 42, 36, 24, 18, 12, 6 49, 42, 35, 28, 14, 7 104, 91, 78, 65, 52, 26, 13 105, 90, 75, 45, 30, 15 63 ÷ 3 = 21 b 108 ÷ 2 = 54 217 ÷ 7 = 31 d $126 ÷ 6 = $21 T b F c T d F T f F g F h F BLM 2.6 ANSWERS BLM 2.1 1 a 10 ÷ 2 = 20 c 35 ÷ 7 = 5 f 12 ÷ 12 = 1 2 a 5 b 6 e 6 f 3 i 7 j 2 m 9 n 3 3 Teacher check BLM 2.2 1 b 6 c 8 f 9 g 7 j 3 k 8 2 a 5 b 14 d 4 e 3 g 4 h 4 j 8 k 3, 5 3 Teacher check 4 a 15 ÷ 3 = 5 c 18 ÷ 3 = 6 BLM 2.3 1 a 50 b e 90 f i 90 j 2 a 31 b e 51 f 3 Teacher check 40 90 70 42 61 b d g c g k o 20 ÷ 4 = 5 16 ÷ 4 = 4 18 ÷ 9 = 2 6 d 5 2 h 1 9 l 3 3 d h l c f i l 5 6 7 6 20 3 36 e 10 i 4 1 a e i 2 a b c d e f g h i j 3 a c 16 b 8 c 72 d 42 36 f 16 g 1 h 108 106 j 179 66 ÷ 6 = 11, 6 × 11 = 66 45 ÷ 9 = 5, 9 × 5 = 45 99 ÷ 33 = 3, 33 × 3 = 99 200 ÷ 10 = 20, 10 × 20 = 200 88 ÷ 8 = 11, 11 × 8 = 88 106 ÷ 2 = 53, 2 × 53 = 106 333 ÷ 3 = 111, 111 × 3 = 333 125 ÷ 5 = 25, 25 × 5 = 125 45 ÷ 15 = 3, 3 × 15 = 45 135 ÷ 5 = 27, 27 × 5 = 135 180 ÷ 9 = 20 b 168 ÷ 2 = 84 $500 ÷ 5 = $100 BLM 2.7 1 a 172 stamps 2 a 15 b 10 e 60 f 2 3 a 51 b 62 e 84 f 90 4 144 ÷ 6 = 24 b c g c g $700.00 36 70 93 21 each d 15 h 81 d 81 h 71 b 35 ÷ 5 = 7 c g k c g 30 40 90 51 41 d h l d h 40 20 40 74 93 BLM 2.4 1 a c 2 a 3 a b c 24 ÷ 3 = 8 b 72 ÷ 9 = 8 42 ÷ 7 = 6 d 80 ÷ 8 = 10 9 b 4 c 7 d 9 9, 36, 1, 18, 4, 12, 2, 3 20, 10, 100, 25, 5, 4, 1, 2, 50 6, 24, 12, 4, 1, 3, 2, 8 73 Targeting Maths © Blake Publishing 2012 MP Operations, Patterns and Algebra pp041-080.indd 73 30/03/12 12:20 PM Sharing Division 2.1 Name Date You will need counters. 1 Read each problem and write the division number sentence using the ÷ sign. a Ten pencils divided into two equal groups ÷ = b Twenty oranges shared into four bowls equally ÷ = ÷ = d Sixteen books shared equally among four groups ÷ = e Twelve drinks divided among twelve soccer players ÷ = f Eighteen apples shared equally among nine girls ÷ = c Thirty-five biscuits shared equally among seven children 2 3 74 Use counters to help complete the number sentences. a 25 ÷ 5 = _____ b 30 ÷ 5 = _____ c 24 ÷ 4 = _____ d 15 ÷ 3 = _____ e 12 ÷ 2 = _____ f 18 ÷ 6 = _____ g 20 ÷ 10 = _____ h 10 ÷ 10 = _____ i 14 ÷ 2 = _____ j 8 ÷ 4 = _____ k 27 ÷ 3 = _____ l 30 ÷ 10 = _____ m 18 ÷ 2 = _____ n 21 ÷ 7 = _____ o 9 ÷ 3 = _____ Draw diagrams to show the following and write the answers. a 45 ÷ 5 = _____ b 32 ÷ 8 = _____ c 18 ÷ 8 = _____ d 56 ÷ 8 = _____ e 39 ÷ 3 = _____ f 42 ÷ 6 = _____ Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Fluency: Use various strategies, including partitioning, to solve division problems. Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 74 30/03/12 12:20 PM Formal Division Division 2.2 Name 1 2 Date Complete the following. The first one has been done for you. 4 a 4 1 6 b 2 1 2 c 3 2 4 d 4 20 e 7 7 0 f 5 4 5 g 4 2 8 h 5 30 i 8 3 2 j 6 1 8 k 7 5 6 l Fill in the missing numbers so that the algorithm is true. a 5 25 7 b 2 c 6 36 d 5 20 g 10 40 h 7 28 4 e 7 2 1 i 3 4 6 42 12 36 f 5 j 5 40 1 2 k 15 l 3 Write some of your own number equations. Give them to a friend to solve. a b c d e f g h i j k l Write the algorithm for each problem. a 15 geese in 3 pens. How many geese in each pen? _____ geese b 35 flowers in 5 bunches. How many flowers in each bunch? _____ flowers c 18 smarties for 3 children. How many smarties for each child? _____ smarties Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Use various strategies, including partitioning, to solve division problems. Use signs in division number sentences and in formal setting out. 75 Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 75 30/03/12 12:20 PM Division Algorithms Division 2.3 Name 1 Date Divide the tens. a b e f 6 300 i 2 5 450 3 270 j c 4 160 g 6 540 k 4 280 3 90 5 200 8 720 d h l 2 80 7 140 9 360 Divide the tens then the ones. a 124 ÷ 4 = eg 183 ÷3 = b 126 ÷ 3 18 tens and 3 ÷ 3 ______________________ ______________________ = 6 tens and 1 = 61 ______________ = ______ ______________ = ______ c 204 ÷4 = d 148 ÷ 2 = e 255 ÷ 5 = ______________________ ______________________ ______________________ ______________ = ______ ______________ = ______ ______________ = ______ f 305 ÷ 5 = g 246 ÷ 6 h 186 ÷ 2 ______________________ ______________________ ______________________ ______________ = ______ ______________ = ______ ______________ = ______ 3 Colour the cells with an answer under 50 blue, between 60 and 70 yellow and over 70 red. 6 126 9 549 8 488 5 205 7 497 6 246 6 480 5 405 7 280 9 369 4 288 4 168 8 328 76 8 568 3 216 2 128 3 189 9 720 Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Fluency: Use partitioning to divide numbers over 100. Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 76 30/03/12 12:20 PM Problem Solving Division 2.4 Name 1 Date Solve these problems. a Adam, Nicole and John had b On an Easter-egg Hunt seventy-two twenty-four cards. How many chocolate eggs were found. How many did each receive when they did each of the nine children receive shared them equally? when they shared them equally? ______ ÷ ______ = ______ ______ ÷ ______ = ______ c Forty-two tomato plants were planted d Eighty oranges were picked and placed in seven equal rows. How many were equally into eight boxes. How many planted in each row? oranges were in each box? ______ ÷ ______ = ______ ______ ÷ ______ = ______ r ______ 2 Write a problem for each number sentence and then write the answers. a ________________________________ b ________________________________ ________________________________ ________________________________ ________________________________ ________________________________ ________________________________ ________________________________ 36 ÷ 4 = _____ 28 ÷ 7 = _____ c ________________________________ d ________________________________ ________________________________ ________________________________ ________________________________ ________________________________ ________________________________ ________________________________ 56 ÷ 8 = _____ 45 ÷ 5 = _____ 3 Complete. a b 12 4 18 3 36÷ 9 1 36 2 c 50 2 100 5 25 100÷ 10 20 1 4 3 12 8 4 24÷ 24 1 2 6 Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Fluency: Recall division facts up to 100. Problem solving: Relate a word problem to a number sentence. 77 Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 77 30/03/12 12:20 PM Patterns and Problems Name 1 Division 2.5 Date Use repeated subtraction to complete these patterns. a 72, 64, 56, _____ , _____ , _____ , _____ , _____ , _____ , 0. b 36, 33, 30, _____ , _____ , _____ , _____ , _____ , _____ , _____ , _____ , _____ , 0. c 54, 48, _____ , _____ , 30, _____ , _____ , _____ , _____ , 0. d 63, 56, _____ , _____ , _____ , _____ , 21, _____ , _____ , 0. e 130, 117, _____ , _____ , _____ , _____ , _____ , 39, _____ , _____ , 0. f 135, 120, _____ , _____ , _____ , 60, _____ , _____ , _____ , 0. 2 Read the following division problems and write two number sentences to show your working out. a There were 63 sailors and 3 yachts. How many sailors were on each yacht? ______ ÷ ______ = ______ b There were 108 books to be placed on 2 shelves in the library. How many books were placed on each shelf? ______ ÷ ______ = ______ c There were 217 children to be organised into 7 equal classes. How many children were in each class? ______ ÷ ______ = ______ d $126 is to be shared between six children fairly. How much does each child receive? 3 ______ ÷ ______ = ______ Write True or False for each statement. a 63 ÷ 7 < 60 ÷ 6 78 ___________ b 8 ÷ 4 > 16 ÷ 2 ___________ c 70 ÷ 10 = 63 ÷ 9 ___________ d 24 ÷ 4 < 36 ÷ 6 ___________ e 55 ÷ 5 > 70 ÷ 7 ___________ f 44 ÷ 4 < 10 ÷ 2 ___________ g 36 ÷ 9 < 24 ÷ 12 ___________ h 81 ÷ 9 < 90 ÷ 10 ___________ Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Fluency: Recall division facts up to 100. Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 78 30/03/12 12:20 PM Two Steps Division 2.6 Name 1 2 3 Date Solve these number problems. Remember to complete the brackets first. a (63 ÷ 7) + (56 ÷ 8) = ______ b (100 ÷ 10) – (24 ÷ 12) = ______ c (24 ÷ 3) × (81 ÷ 9) = ______ d (63 ÷ 3) + (63 ÷ 3) = ______ e (18 ÷ 2) × (36 ÷ 9) = ______ f (72 ÷ 9) + (56 ÷ 7) = ______ g (35 ÷ 5) – (30 ÷ 5) = ______ h (120 ÷ 10) × (90 ÷ 10) = ______ i (54 ÷ 9) + 100 = j 200 – (63 ÷ 3) = ______ ______ Use multiplication to check that you have divided correctly. a 66 ÷ 6 = ____ , 6 × ____ = ____ c 99 ÷ 33 = ____ , 33 × ____ = ____ b 45 ÷ 9 = ____ , d 200 ÷ 10 = ____ , 9 × ____ = ____ 10 × ____ = ____ e 88 ÷ 8 = ____ , ____ × ____ = ____ f 106 ÷ 2 = ____ , ____ × ____ = ____ g 333 ÷ 3 = ____ , ____ × ____ = ____ h 125 ÷ 5 = ____ , ____ × ____ = ____ i 45 ÷ 15 = ____ , ____ × ____ = ____ j 135 ÷ 5 = ____ , 5 × ____ = ____ Read the following division problems. Write two ways of working out your answer. a Toby had 180 minutes to complete the 9 questions in his maths exam. How much time did he need to allow each question so that he would finish? ______ ÷ ______ = ______ b Jodie had to travel 168 km to reach her holiday house. If she took 2 days to travel, how far would she travel each day? ______ ÷ ______ = ______ c Eric won $1000 in a competition. He kept $500 and shared the rest of his winnings between his 5 brothers. How much did each brother receive? ______ ÷ ______ = ______ Number and place value: ACMNA076 Develop efficient mental and written strategies and use appropriate digital technologies for multiplication and for division where there is no remainder. Understanding: Multiplication facts are related to division facts. Fluency: Recall division facts up to 100. 79 Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 79 30/03/12 12:20 PM Assessment • Division Name 1 Division 2.7 Date Read the problems and show two ways of solving them. a There were 288 stamps altogether when 4 boys put their collections in one album. They had all collected the same amount of stamps. How many did each have before joining them together? ______ ÷ ______ = ______ b There were 8 girls in the rowing team. How much did each girl win when they shared the prize money of $5600? 2 3 ______ ÷ ______ = ______ Solve the following: a (8 ÷ 2) + (33 ÷ 3) = ______ b (25 ÷ 5) × (20 ÷ 10) = ______ c (36 ÷ 6) × (36 ÷ 6) = ______ d (49 ÷ 7) + (56 ÷ 7) = ______ e (100 ÷ 10) × (24 ÷ 4) = ______ f (55 ÷ 11) – (33 ÷ 11) = ______ g (42 ÷ 6) × (60 ÷ 6) = ______ h (81 ÷ 9) × (81 ÷ 9) = ______ a c b 3 153 e f 2 168 4 4 248 d 3 279 g 5 450 4 324 h 5 105 6 426 Circle groups of 6. Record the shares in two different ways. ______ ÷ ______ = _____ 80 Targeting Maths © Blake Publishing 2012. MP Operations, Patterns and Algebra pp041-080.indd 80 30/03/12 12:20 PM