Table of contents 1. ESSENTIAL REVISION …………..……………………………. 3 - 39 a) Number & Language …..………………………….…… b) Standard Form and Approximation ..…………………... c) Calculator .….……….....…………………….……… d) Ordering..…………………………………………... …… e ) Fractions ………………………………..……………….. f ) Conversion…………………….....…………………….… 2. LIMITS OF ACCURACY …………………..……………………. 40 a) Direct Problems………………..………………………… b)(+) & (×) Operations…..………………………………... c) (-) & (÷) Operations ….……….....……………………… d)Word Problems ….……...…….....……………………… 3. SETS AND VENN DIAGRAM …………..…………… 61 a) Shading ……………..……...…………………….…… b)Elements shown in each region…..………….…………... c) Problems involving sets…………... …………………..… 1 4. ALGEBRAIC REPRESENTATION & MANIPULATION ………………………………….……………. 93 a) Expansion………………..…………….………………… b) Factorisation…..……………………………………….... c) Substitution & Subject of the Formula ...……….……… 5. SOLVING EQUATIONS………………………….……………. 116 a) Simple Linear Equations ...……..…….…………………… b) Solving Inequalities …………………………………… c) Solving Quadratic Equations by Factorising ..……………….. d) Solving Quadratic Equations using Quadratic Formulae .……… e) Simultaneous Equations...………….……………….…… f) Constructing Equations ..…………….……………….… g)The Completed Square Form..……..………………..…... 6. RATIO, PROPORTION & PERCENTAGE..……………. 148 a) Ratio……………………………………………………… b)Inverse Proportion……………….……………………… c) Percentage ……………………….……………………… d)Percentage Increase & Decrease…….....………………… e) Simple & Compound Interest ..………………...………… f) Variation…………………………….....……………….… 2 Number & Language 3 a) Number & Language 1 From the list of numbers above, write down a- A multiple of 8 Answer (a) ………….….….[1] b- A square Answer (b) …………..…….[1] c- A cube Answer (c) …………..…….[1] d- Two prime numbers Answer (d) …………..…….[1] e- A factor of 156 Answer (e) ………….……..[1] f- Square root of 784 Answer (f) ………….……...[1] g- Two numbers whose product is 567 Answer (g) ………….…..….[1] ______________________________________________________ 2 From the list of numbers above, write down a- An integer Answer (a) ………..….…….[1] b- A square number Answer (b) ………………….[1] c- An irrational number Answer (c) …………….…….[2] 4 3 19 225 20 8 17 15 32 35 30 From the list of numbers above, write down a- A multiple of 7 Answer (a) ………….…….[1] b- A square Answer (b) ………….…….[1] c- A cube Answer (c) ………….…….[1] d- Prime number Answer (d) ………….…….[1] e- A factor of 400 Answer (e) ………….…….[1] f- Square root of 289 Answer (f) ………….……. [1] _____________________________________________________________ 4 From the list of numbers , find a- A prime number Answer (a) ………….…….[1] b- A cube number Answer (b) ………….…….[1] c- A square number Answer (c) ………….…….[1] 5 5 a) Find the value of (i) The square root of 64. Answer (i) …………..…….[1] (ii) The cube root of 64. Answer (ii) ………….…….[1] b) (i) Write down a common factor of 15 and 27, which is greater than 1. Answer (i) ………….…….[1] (ii) Write down a common multiple of 10 and 12, which is greater than 1. Answer (ii) ………….…….[1] c) Write down 40 as a product of prime numbers. Answer (c) 40 = ………….…….…….[2] d) Write down 56 as a product of prime numbers. Answer (d) 56 = …………….…….…….[2] 6 6. From the list above, write down Answer (a) ………….…….[1] a- A prime number b- A factor of 27 Answer (b) …..……….…….[1] c- A multiple of 4 Answer (c) ……..…….…….[1] d- An irrational number Answer (d) …..……….…….[1] ______________________________________________________ 7. a- Find the least common multiple of 18 and 24. Answer (a) ………..….…….[2] b- Find the highest common factor of 18 and 24. Answer (b) ………..….…….[2] c- Write down the factors of 48 which are between 10 and 40. Answer (c) ………..….…….[2] 7 8 _____________________________________________________ 9 10 8 STANDARD FORM AND APPROXIMATION 9 b) Standard Form and Approximation 1 2 3 10 4 5 6 7 11 8 9 10 12 11 12 13 c) Calculator 1 2 3 14 4 5 15 6 7 8 16 9 10 11 17 12 13 18 14 15 16 19 17 18 20 d) Ordering 1 2 3 21 4 5 6 22 7 For each part, choose a symbol from those above to make a correct sentence a) 0.4 …………..…… b) 42 …………..……16 c) 0.3 ………….…… ______________________________________________________________________________________________ 8 _______________ ______________ 9 23 __________ ____________ 10 __________________________________________________________________________________________ 11 12 24 13 25 Fractions 26 e) Fractions 1 2 3 27 4 5 28 6 7 29 8 9 30 10 11 31 12 13 32 14 15 Ali, Sami , Kahid and Fadi shared a cake. a) Ali ate 2/9 of the cake and Sami ate 1/6 of the cake. Show that 11/18 Do not use your calculator and , show all your working. 11 /1 8 of the cake remained . [2] b) Khalid ate of the cake that remained. Find the fraction of the cake that left was for Fadi. 33 Answer (b) ………….…….…..…………….[2] 16 17 34 18 19 35 f) Conversion: ** Distance: 1000 Km 100 m 10 cm mm ** Area: 2 (1000) 2 Km (100) m2 2 (10) ** Capacity ( Volume): 100 L 10 cl ml cm3 1000 L ml cm3 ** Mass: 1000 Kg 1000 gram mg 36 2 cm2 mm2 1 2 3 4 37 5 6 7 How many glasses, each holding 200 cm3, can be filled completely from a full 4.5 Litre bottle of water? Answer ………....……………..……… 38 [2] A bottle of mass 480 grams contains 75 centilitres of water. 8 (i) (ii) (iii) 9 Write 75 centilitres in millilitres. Answer ………....……………..………ml [1] Answer ………....……………..………L [1] Answer ………....……………..………Kg [1] Write 75 centilitres in Litres. Write 480 grams in kilograms. (a) Change 3000 mm2 to cm2. Answer ………....……………..……… [1] Answer ………....……………..……… [1] Answer ………....……………..……… [1] Answer ………....……………..……… [1] Answer ………....……………..……… [1] Answer ………....……………..……… [1] (b) Change 65000 cm2 to m2. (c) Change 2.5 m2 to cm2. (d) Change 8500 gram to kg. (e) Change 4.2 kg to gram. (f) Change 4300 cm3 to Litre. 39 40 41 a) Direct Problems 1 Hana's height is given as 162 cm, correct to the nearest cm. Find the upper and lower bounds for Hana's height? Answer 2 cm [2] The equilateral triangle with 6.5 cm side, all measurements are given correct to the nearest centimeter. Find the upper and lower bound for the sides. Answer 42 cm [2] 3 A sack of sand weighs 20 kg measured to the nearest kg. Find the upper and Lower bound for the weigh? Answer 4 Kg [2] A bottle of water of 300 ml. volume measured to the nearest ml. Find the upper and Lower bound for the volume? Answer 5 ml [2] The population in a country is given as 50 000, correct to the nearest 1000. What is the lowest and highest possible number of people on the country? Answer 6 A square of a side 3 metres, the sides are given correct to nearest metre. 43 [2] Find the upper and lower bound for the sides. Answer 7 m [2] The number of people on a bus is given as 50, correct to the nearest 10. What is the lowest and highest possible number of people on the bus? Answer 8 44 [2] 9 10 11 45 12 13 46 b) ( + ) & ( x ) Operations 1 2 3 47 4 5 6 48 7 8 49 9 10 50 c) (−) & ( ÷ ) Operations 1 2 51 3 Hakim and Basira measure their heights. Hakim’s height is 157 cm and Basira’s height is 163 cm, both correct to the nearest centimeter. Find the greatest possible difference between their heights. . Answer 4 ………….…….…..…………….[2] A rectangular pool’s depth is 150 cm, correct to the nearest 10 centimetre. (a) Find the upper and lower bound for the depth of the pool. Answer (b) Find the greatest difference between upper and lower bounds for it’s depth. Answer (c) cm [2] ………….…….…..…………….[2] Find the minimum value for the ratio between upper and lower bounds for it’s depth. Answer 52 ………….…….…..…………….[2] 5 Two towers has different heights. Tower A is 40 m height, and tower B is 20 m height Both heights correct to the nearest 2 metre. Tower B Tower A (a) Complete the statement about their heights, H m , of th two towers. Answer (a) m [2] m [2] (b) Find the greatest possible difference between their heights. Answer (b) ………….…….…..…………… m [2] (c) Find the minimum value for the ratio between their heights. Answer (c) 53 ………….…….…..……………. m [2] d) Word Problems 1 2 3 54 4 5 6 55 7 8 56 9 10 57 11 12 7 58 13 59 60 61 SYMBOLS • Sets listed inside a pair of curly brackets { }. • Capital letters are usually used as names for sets Symbol Meaning Empty set. , {} ε Universal set union intersection B ⊂A B is a proper subset from A B ⊄A B is not a subset from A B ⊆A B is an improper subset from A A' Complement of a set n (A) Number of elements of a set a B a B ** Note : B a is an element of set B a is not an element of set B ⊆ A : Same elements in both sets. Or : is improper subset from all sets. 62 {1,3,5} ⊆ {1,3,5} ⊆ {1,3,5} a) Shading A' B' A∩B A ∩ B' A'∩ B A'∪ B (A ∪ B)' A ' ∩ B' 63 A∪B A ∪ B' (A ∩ B)' A' ∪ B' A A ∪ B …(B⊂ A) A∩B A∪ B A∩B (A ∩ B)' (A ∪ B)' A ∩ B' 64 A∪B A∪ C A∩ B B∩C (A ∪ B)' (A ∪ C)' Aʹ ∩ Bʹ (A ∪ B)' B∩ C ∪ A A∩C Aʹ ∩ Bʹ 65 A∩B∪C A∪B∪C A∩B Aʹ∪ (C∪B) A∩ B∩C A∩C A∪B Aʹ∩(C∪B) Cʹ∩(A∪B) Cʹ∩(A∩B) 66 Important notes for shading: A′ = not A B′ = not B (A∪B)′= not all A and all B = A′ ∩ B′ (A∩B)′ = not common part of A & B = A′ ∪ B′ A ∪ B′ = all in A and rectangle (A ∪ C) ∪ B′ = all in (A ∪ C) A′ ∪ B = all in B and rectangle A′ ∪ (B ∪ C) = all in (B ∪ C) and rectangle A′ ∩ B = moon part of B A′ ∩ (B ∪ C) = moon part of (B ∪ C) A′ ∩ (B ∩ C) = moon part of (B ∩ C) A ∩ B′ = moon part of A (A ∪ C) ∩ B′ = moon part of (A ∪ C) (A∩ C) ∩ B′ = moon part of (A ∩ C) 67 1 2 68 3 4 6 69 5 70 6 71 b) Elements shown in each region 1 72 2 73 3 74 4 75 5 76 6 77 7 78 8 79 9 80 10 11 If the n( ) = 34 , n(A B) = 29 , n (A B' ) = 13 , n(A) = 18 Complete the Venn diagram to show this information. ε B A [2] 81 12 If the n( ) = 25 , n(A B) = 19 , n (A B' ) = 11 , n(A) = 15 Complete the Venn diagram to show this information. ε B A [2] 13 If the n( ) = 40 , n(A B) = 35 , n (A B' ) = 10 , n(A) = 30 Complete the Venn diagram to show this information. ε B A [2] 82 14 83 c) Problems involving sets 1 In a group of 24 students, 21 like football and 15 like swimming. One student does not like football and does not like swimming. Find the number of students who like both football and swimming. ε F S Answer ………....……………..………. [2] In a group of 45 boys, 22 like basketball and 25 like Tennis. Three students do not like basketball and do not like Tennis. Find the number of students who like both basketball and Tennis. 2 ε B T Answer ………....……………..………. 84 [2] 3 There are 55 boys in a class, 32 study Science , 25 study Maths. And 5 neither study Science or Maths. ε S M Complete Venn diagram to show this information. [2] a) Find the number of boys who study both Science and Maths. Answer (a) ………....……………..………. [1] b) Find the number of boys who study only Science. Answer (b) ………....……………..………. [1] c) Find the number of boys who didn’t study Maths. Answer (c) ………....……………..………. 85 [1] 4 5 86 6 87 7 88 8 89 9 90 91 92 a) Expansion :1 a) b) Expand and simplify:- = ……………………………………………………….. = ……………………………………………………….. c) = ……………………………………………………….. d) = ……………………………………………………….. e) = ……………………………………………………….. f) = ……………………………………………………….. g) = ……………………………………………………….. h) = ……………………………………………………….. i) = ……………………………………………………….. ……………………………………………………….. j) = ……………………………………………………….. 93 ……………………………………………………….. k) l) m) = ……………………………………………………….. = ……………………………………………………….. = ……………………………………………………….. n) = ……………………………………………………….. o) = ……………………………………………………….. ……………………………………………………….. ……………………………………………………….. p) = ……………………………………………………….. ……………………………………………………….. ……………………………………………………….. q) = ……………………………………………………….. ……………………………………………………….. ……………………………………………………….. r) = ……………………………………………………….. ……………………………………………………….. 94 ……………………………………………………….. 2 3 95 4 5 Expand the brackets and simplify :a) = …………………….…………………………………………….. …………………….…………………………………………….. b) = …………………….…………………………………………….. …………………….…………………………………………….. 96 6 7 97 b) Factorisation 1 Factorise completely: = ……………………………………………………….. a) b) = ……………………………………………………….. c) = ……………………………………………………….. d) = ……………………………………………………….. = ……………………………………………………….. e) f) 49 = ……………………………………………………….. g) = ……………………………………………………….. h) = ……………………………………………………….. i) = ……………………………………………………….. j) = ……………………………………………………….. 98 k) l) m) n) o) p) q) u) = ……………………………………………………….. = ……………………………………………………….. = ……………………………………………………….. = ……………………………………………………….. = ……………………………………………………….. = ……………………………………………………….. = ……………………………………………………….. = ……………………………………………………….. 99 2 3 100 3 4 101 5 6 102 7 103 8 9 104 10 11 105 12 (c) 106 c) Substitution & Subject of the Formula 1 2 107 3 4 108 5 6 109 7 8 110 9 10 11 111 12 13 Make d the subject of the formula c= Answer 14 Make w the subject of the formula C 112 ………....……………..………. [3] . Answer ………....……………..………. [4] Answer ………....……………..………. [3] Answer ………....……………..………. [3] 15 Make p the subject of the formula . 16 Make c the subject of the formula . . 113 114 115 a) Simple Linear Equations 1 Solve the following equations a) Answer (a) ………....……………..………. [2] Answer (b) ………....……………..………. [2] b) c) Answer (c) ………....……………..………. [2] Answer (d) ………....……………..………. [2] d) 116 2 Solve the following equations (a) . Answer (a) ………....……………..………. [2] Answer (b) ………....……………..………. [2] Answer (c) ………....……………..………. [3] Answer (d) ………....……………..………. [3] (b) (c) 3 Solve the equation 117 4 5 Answer ………....……………..………. [3] Answer ………....……………..………. [3] Solve the equation Solve the equation Answer 118 ………....……………..………. [3] 6 7 8 119 9 10 120 11 12 \ 121 b) Solving Linear Inequalities 1 Solve the inequality . Answer ……….......……………..………. 2 3 Solve the inequality Solve the inequality [2] . Answer ……….......……………..………. [3] Answer ……….......……………..………. [2] . 122 4 Solve the inequality Answer ……….......……………..………. [3] _____________________________________________________________________________________________ 5 Solve the inequality Answer ……….......……………..………. 6 [3] Solve the inequality Answer ……….......……………..………. [3] 123 7. Solve the inequality: Answer ……….......……………..………. [3] 8 Solve the inequality: A n s w e r … 124 Formula ________________________________________________ Example : 125 Notes : 126 c) Solving Quadratic Equations by Factorising 1 (a) 2 127 3 4 128 5 Solve the following equations by factorising: a) Answer (a) ………....…… or ………..………. [3] Answer (b) ………....…… or ………..………. [3] Answer (c) ………....…… or ………..………. [3] b) c) c) d) 129 d) Solving Quadratic Equations using Quadratic Formulae 1 Solve the equation. Show all your working and give your answers correct to 2 decimal places. Answer 2 ………....…… or ………..………. Solve the equation. Show all your working and give your answers correct to 2 decimal places. ………....…… or Answer 130 ………..………. [4] [4] 3 Solve the equation. Show all your working and give your answers correct to 2 decimal places. Answer 4 ………....…… or ………..………. Solve the equation. Show all your working and give your answers correct to 2 decimal places. ………....…… or Answer 131 ………..………. [4] [4] 5 Solve the equation. Show all your working and give your answers correct to 2 decimal places. ………....…… or Answer 6 ………..………. [4] ………..………. [4] Solve the equation. Show all your working and give your answers correct to 2 decimal places. ………....…… or Answer 132 e) Simultaneous Equations 1 2 133 3 4 134 5 Solve the simultaneous equations. Answer …………………..………….... ……………...…………..…… 135 [3] Equations and Inequalities 136 e) Constructing Equations :1 Ravindra scores x marks in a test. Manpreet scores 4 more marks than Ravindra. (i) Write down Manpreet’s mark in terms of . Answer (i) (ii) ………....……………..………. [1] ………....……………..………. [1] Tamsin scores 3 times as many marks as Ravindra. Write down Tamsin’s mark in terms of . Answer (ii) (iii) Write down and simplify the total of the three marks in terms of . Answer (iii) 137 ………....……………..………. [3] 2 138 3 4 139 5 a) 50º xº 2yº Complete the equation ………....……………..………. [2] ………....……………..………. [2] b) 160º 100º xº yº Complete the equation 140 6 The length, in centimeters of the sides of sides of a triangle are and The perimeter of the triangle is 52 cm. (a) Use this information to write down an equation in . (b) Find the value of Answer (a) ………....……………..………. [3] Answer (b) ………....……………..………. [2] . 141 7 x cm 2x cm The perimeter of the rectangle in the diagram above is 36 centimeters. a) Find the value of . Answer (a) ………....……………..………. [3] ………....……………..………. [2] b) Using this value of x, calculate the area of the rectangle. Answer (b) 142 8 3 cm 17 cm The diagram above shows another rectangle. a) Write down two equations in a and b. Answer (a) ………....……………..………. [2] b) Solve these two equations simultaneously to find a and b. Answer ……………………………..….... ……………..…………..………. 143 [3] 9 In this question the diagrams are not to scale. a) Calculate the value of . 800 500 1100 0 Answer (a) ………....……………..………. [2] ………....……………..………. [2] b) Write down an equation in x and y. 800 3y0 0 950 Answer (b) 144 10 145 11 146 12 147 f) The Completed Square Form 1 Write in the completed square form . Answer ……………………………………..………. 2 Write in the completed square form . Answer ……………………………………..………. 148 [3] [3] 3 Write in the completed square form . Answer ……………………………………..………. 4 Write in the completed square form . Answer ……………………………………..………. 149 [3] [3] 5 Write in the completed square form . Answer ……………………………………..………. 6 Write in the completed square form . Answer ……………………………………..………. 150 [3] [3] 151 152 a) Ratio 1. Direct Proportion 1 Mark and Amy share $600 in the ratio 5: 1 Calculate how much money does Mark receives? Answer 2 Chris and Mark share $45 in the ratio 7:2 [2] Calculate how much Chris receives. Answer 3 ………....……………..………. ………....……………..………. [2] A packet of sweets costs $ 2.25. Felipe and his brother share the cost in the ratio of 5:4. How much does Felipe pay? Answer 153 ………....……………..………. [2] 4 Mortar is a mixture of cement, sand, and lime in the ratio Cement : sand : lime = 1 : 5 : 2. Calculate how much sand there is in a 12 kg bag of mortar. Answer 5 ………....……………..………. [2] The ratio of teachers : male students : female students in a school are 2:17:18. The total number of students is 665. Find the number of teachers. Answer 6 ………....……………..………. The train fare is $ 24 for an adult. The train fare for a child is a) for an adult fare. Find the fare for a child. Answer (a) ………....……………..………. b) [2] [1] the total fare for Mr. and Mrs. Sayed and their 3 children. Answer (b) ………....……………..………. 154 [1] 7 8 155 9 10 156 Inverse Proportion 1 Eleven taps fill a tank in three hours. How long would it take to fill the tank if only six taps are working? Answer 2 ………....……………..………. [2] Nine children share out equally the chocolates in a large tin and get eight each. If there were only six children, how many would each get? Answer 4 ………....……………..………. [2] A field of grass feeds 24 cows for six days. How long would the same field feed 18 cows? Answer 157 ………....……………..………. [2] c) Percentage 1 2 3 4 Calculate 30% of 270 m Answer 158 ………....……………..………. m [2] 5 Calculate 60% of 200 . Answer 6 [1] A Write 0.36 as a fraction. Give your answer in its lowest terms. Answer 7 ………....……………..………. ………....……………..………. [2] A Write 0.48 as a fraction. Give your answer in its lowest terms. Answer 8 159 ………....……………..………. [2] 9 10 10 160 11 12 12 13 When Jon opened a packet containing 40 biscuits, he found 8 biscuits were broken. What percentage of biscuits were broken? Answer 161 ………....……………..………. [2] d) Percentage Increase & Decrease 1 2 162 3 4 5 163 6 7 164 8 9 10 165 11 12 166 13 The $72 is 60% of the cost of a ticket. Calculate the cost of the ticket. Answer ………....……………..………. Simple And Compound Interest 167 [2] e) Simple & Compound Interest ** Simple Interest 1 Sophie invests $450 at a rate of 1.5% per year simple interest. Calculate the interest she earns after 8 years. Answer 2 ………....……………..………. [2] ………....……………..………. [2] Ally invests $720 at a rate of 3% per year simple interest. Calculate the total amount she earns after 5 years. Answer _____________________________________________________________________________________ 3 Maria puts $600 into a bank account for 3 years at a rate of 3.5% per year simple interest. Calculate the total amount she earns after 3 years. Answer 168 ………....……………..………. [2] 4 Mark invests $1200 at a rate of 4.5% per year simple interest. Calculate the total amount he earns after 6 months. Answer 5 169 ………....……………..………. [3] ** Compound Interest 1 Amiria invests $200 for 2 years at a rate of 1.5% per year compound interest. Calculate the total amount Amiria has at the end of the two years. Answer 2 ………....……………..………. [3] John invests $600 for 3 years at 4% per year compound interest. Calculate the total amount he has at the end of the three years. Answer 3 ………....……………..………. [3] Sally invests $1200 at a rate of 5.5% per year compound interest. Calculate the interest she earns after 10 years. Answer 170 ………....……………..………. [3 4 5 171 6 172 ** Mixed Questions 1 173 2 3 174 4 175 Variation 176 f) Variation Key works for ** Direct Proportional direct variation: * Proportional Directly 1 * Proportional * Varies * Varies directly 2 177 3 4 178 5 6 179 7 8 180 ** Inverse Proportional 1 2 181 3 _________________________________________________________________________________________________ 4 182 5 6 183 . 184