Name: ___________________________________
Two Digit Addition – Adding Multiples of 10 with Blocks
Classwork
Directions: Use base ten blocks at your seat to help you solve each problem.
Sample:
2 tens + 3 tens = 5 tens
20 + 30 = 50
1.
5 tens
+ 4 ten
tens
50
+ 40
2.
7 tens
+ 2 tens
tens
70
+ 20
3.
4 tens
40
+ 20
4.
6 tens
+ 3 tens
tens
60
+ 30
+ 2 tens
tens
5.
5 tens
+ 3 tens
tens
50
+ 30
6.
8 tens
+ 1 ten
tens
80
+ 10
7.
6 tens
60
+ 10
8.
9 tens
+ 1 ten
Tens
90
+ 10
+ 1 ten
tens
NJ Center for Teaching and Learning
~1~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Adding Multiples of 10 with Blocks
Homework
Count the number of tens and then add to find the sum.
3 tens + 5 tens = 8 tens
30 + 50 = 80
Directions: Draw base ten blocks to help you solve each problem.
1. 3 tens + 5 tens = ______ tens
30 + 50 = ______
2. 2 tens + 3 tens = ______ tens
20 + 30 = ______
3. 6 tens + 2 tens = ______ tens
60 + 20 = ______
4. 5 tens + 4 tens = ______ tens
50 + 40 = ______
5. 1 ten + 8 tens = ______ tens
80 + 10 = ______
NJ Center for Teaching and Learning
~2~
www.njctl.org
Name: ___________________________________
Two Digit Addition– Multiples of 10 & a 2 Digit Number with Blocks
Classwork
Directions: Use base ten blocks and your place value mat to help you
solve the addition problems.
1. 43 + 10 = ______
2.
52 + 20 = ______
3. 30 + 67 = ______
4.
29 + 40 = ______
5. 50 + 33 = ______
6.
13 + 60 = ______
7. 70 + 25 = ______
8.
19 + 80 = ______
9. 20 + 78 = ______
10. 81 + 10 = ______
11.
Draw base ten blocks to help you solve the problem.
Kim has 24 pieces of candy. Her mom gave her
10 more. How many pieces of candy does she
have in all? _________
NJ Center for Teaching and Learning
~3~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Multiples of 10 & a 2 Digit Number with Blocks
Homework
Base ten blocks can help us add. Draw longs and cubes
to show each number. Then count how many there are in all.
65 + 30 = 95
Directions: Draw base ten blocks to help solve each problem
1.
2.
67 + 30 = ______
20 + 44 = ______
3.
4.
40 + 29 = ______
74 + 10 = ______
5.
6.
31 + 50 = ______
60 + 15 = ______
Directions: Count by tens. Fill in the missing numbers.
NJ Center for Teaching and Learning
~4~
www.njctl.org
Name: ___________________________________
Two Digit Addition– Adding 10 in Our Head
Classwork
1. 24, 34, 44, ______, ______, ______
2. 15, 25, 35, ______, ______, ______
3. 47, 57, 67, ______, ______, ______
4. 31, 41, 51, ______, ______, ______
Directions: Solve each number story by adding 10.
Mark had 31 baseball cards.
Carlos had ten more.
How many cards did Carlos
have?
Jax has 75 marbles.
His brother gave him 10 more.
How many marbles does Jax
have?
______ + 10 = ______
______ + 10 = ______
Becky bought 12 butterfly
stickers.
Tess bought 10 more.
How many stickers does Tess
have?
______ + 10 = ______
NJ Center for Teaching and Learning
~5~
Nick did 24 jumping jacks.
Jay did ten more jumping jacks.
How many jumping jacks did
Jay do?
______ + 10 = ______
www.njctl.org
Name: ___________________________________
Two Digit Addition – Adding 10 in Our Head
Homework
When adding ten, we count up by 10.
The tens place goes up by 1 and the ones place stays the
same.
43 + 10 = 53
Directions: Write the number that is 10 more.
1. 36  ______
2. 57  ______
3. 28  ______
4. 69  ______
5. 84  ______
6. 70  ______
7. 13  ______
8. 22  ______
9. 45  ______
10. 51  ______
Directions: Solve the number story by adding 10.
11. Jim has 29 fish. Ken has 10 fish. How many fish do they
have in all?
______ + 10 = ______
NJ Center for Teaching and Learning
~6~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Patterns When Adding Ten
Classwork
Directions: Add. Check your answer by circling the tens place to show how it
went up by one.
1.
3.
5.
7.
9.
10.
45
+ 10
2.
24
+ 10
4.
10
+ 31
6.
71
+ 10
8.
57
+ 10
10
+ 19
62
+ 10
10
+ 83
48 + 10 = ______
10 + 55 = ______
NJ Center for Teaching and Learning
~7~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Patterns When Adding Ten
Homework
Remember when you add 10,
the tens place goes up 1 and the ones place stays the same.
39 + 10 = 49
Directions: Add.
1.
54
+ 10
2.
75
+ 10
3.
42
+ 10
4.
10
+ 39
5.
10
+ 13
6.
26
+ 10
7. There are 12 turtles on a log. Ten more turtle climbs on.
How many turtles are on the log?
______ + ______ = _______
NJ Center for Teaching and Learning
~8~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Multiples of 10 & a 2 Digit Number in Our Head
Classwork
Directions: Write the number that you will put in your head. Then count on by
10 using your fingers.
Put the number that is not a
multiple of 10 in your head.
Then look at the tens number and
put up your fingers to represent the
number in the tens place.
1. 23 + 40 = ______
2. 30 + 67 = ______
3. 45 + 50 = ______
Directions: Add.
4.
18
+ 20
5.
30
+ 47
NJ Center for Teaching and Learning
6.
60
+ 11
~9~
7.
40
+ 52
8.
63
+ 20
www.njctl.org
Name: ___________________________________
Two Digit Addition – Multiples of 10 & a 2 Digit Number in Our Head
Homework
Our heads and fingers can help us add multiples of tens. Put the
number that is not a multiple of ten in your head. Then look at the
addend that is a multiple of ten. Put up your fingers to represent
the number in the tens place. Count up by ten.
Directions: Write the number that you will put in your head. Then count on by
10 using your fingers.
1. 40 + 36 = ______
2. 47 + 40 = ______
3. 29 + 30 = ______
NJ Center for Teaching and Learning
4. 50 + 17 = ______
~ 10 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Two Digit Plus One Digit Pt. 1
Classwork
Directions: Add. Don’t forget to add the ones and then the tens.
1.
Tens
Ones
Tens
2.
4 7
+ 2
3.
Tens
Ones
Ones
3 2
+ 5
Tens
4.
Ones
7 1
+ 8
2 4
+ 3
Directions: Draw a line between the tens and the ones. Add to find the sum.
5.
6.
63
+ 3
8.
7.
82
+ 5
9.
24
+ 4
NJ Center for Teaching and Learning
11
+ 6
10.
72
+ 7
~ 11 ~
91
+ 8
www.njctl.org
Name: ___________________________________
Two Digit Addition – Two Digit Plus One Digit Pt. 1
Homework
When adding a two digit and a one digit number, add the ones and then the tens.
Draw a line down the middle to help you.
14
+ 5
19
Directions: Add to find the sum.
1.
2.
35
+ 2
4.
3.
71
+ 8
5.
16
+ 3
7.
6.
64
+ 5
8.
44
+ 4
23
+ 5
86
+ 1
9.
52
+ 6
91
+ 7
Directions: Rewrite the numbers on top of each other and then add.
NJ Center for Teaching and Learning
~ 12 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Two Digit Plus One Digit Pt. 2
Classwork
1. 52 + 7 =
+
4. 61 + 8 =
+
7. 21 + 6 =
+
NJ Center for Teaching and Learning
2. 4 + 23 =
+
5. 5 + 72 =
+
8. 3 + 34 =
+
~ 13 ~
3. 93 + 6 =
+
6. 42 + 7 =
+
9. 83 + 5 =
+
www.njctl.org
Name: ___________________________________
Two Digit Addition – Two Digit Plus One Digit Pt. 2
Homework
When adding a two digit and a one digit number,
be sure to line the ones and tens on top of each other and then add.
16
+ 3
16 + 3 =
1. 52 + 7 =
+
4. 52 + 7 =
+
NJ Center for Teaching and Learning
2. 4 + 23 =
+
5. 4 + 23 =
+
~ 14 ~
3. 93 + 4 =
+
6. 93 + 4 =
+
www.njctl.org
Name: ___________________________________
Two Digit Addition – Two Digit Plus Two Digit Pt. 1
Classwork
Directions: Use base ten blocks and your place value mat to solve
each problem.
1. 12 + 26 = ______
6. 28 + 11 = ______
2. 47 + 32 = ______
7. 13 + 56 = ______
3. 75 + 23 = ______
8. 48 + 31 = ______
4. 34 + 82 = ______
9. 23 + 72 = ______
5. 33 + 66 = ______
10. 24 + 54 = ______
Directions: Use your blocks to help find the correct answer. Fill in the
circle next to the correct answer.
11. 62 + 21 = ______ 12. 36 + 43 = ______
o 83
o 38
o 80
NJ Center for Teaching and Learning
o 97
o 79
o 76
~ 15 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Two Digit Plus Two Digit Pt. 1
Homework
Base ten blocks can help us add two digit numbers.
Drawing l for tens and o for ones is helpful.
23 + 56 = 79
llooo+llllloooooo
Directions: Draw l and o to help solve each addition sentence.
1. 24 + 13 = ______
4. 81 + 15 = ______
2. 74 + 21 = ______
5. 30 + 67 = ______
3. 53 + 36 = ______
6. 48 + 20 = ______
Directions: Draw l and o. Fill in the circle next to the correct answer.
13. 42 + 35 = ______ 14. 61 + 38 = ______
o 95
o 77
o 13
NJ Center for Teaching and Learning
o 99
o 37
o 98
~ 16 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Two Digit Plus Two Digit Pt. 2
Classwork
Directions: Draw a line between the tens and ones. Add to find the sum.
1.
25
+ 64
2.
16
+ 73
3.
38
+ 51
4.
43
+ 42
5.
14
+ 83
6.
28
+ 61
7.
34
+ 30
8.
56
+ 31
9.
71
+ 17
10. 40
+ 39
NJ Center for Teaching and Learning
11. 36
+ 51
~ 17 ~
12. 74
+ 15
www.njctl.org
Name: ___________________________________
Two Digit Addition – Two Digit Plus Two Digit Pt. 2
Homework
When adding 2 two digit numbers, make sure the numbers are lined
up on top of each other. First add the ones and then the tens.
Drawing a line between the tens and ones may help.
Tens Ones
14
+25
39
Directions: Add the ones and then the tens.
1.
52
+ 26
2.
61
+ 37
3.
83
+ 15
4.
34
+ 44
5.
41
+ 58
6.
83
+ 62
7.
23
+ 73
8.
14
+ 81
9.
73
+ 19
NJ Center for Teaching and Learning
~ 18 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Intro to Regrouping
Classwork
Directions: Draw base ten blocks to help you. Don’t forget to circle the ones to
show regrouping.
1.
34
+ 27
2.
26
+ 49
3.
75
+ 18
NJ Center for Teaching and Learning
~ 19 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Intro to Regrouping
Classwork
4.
43
+ 38
5.
64
+ 26
6.
82
+ 19
7.
27
+ 37
NJ Center for Teaching and Learning
~ 20 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Intro to Regrouping
Homework
Each place can only hold 9 or less. If there are 9 or more
ones, bundle them to make a 10 and bring it next door.
Directions: Draw base ten blocks to help you. Don’t forget to circle the ones to
show regrouping.
1.
2.
34
+ 27
26
+ 49
NJ Center for Teaching and Learning
~ 21 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Intro to Regrouping
Homework
3.
75
+ 18
4.
43
+ 38
5.
64
+ 26
6.
82
+ 19
NJ Center for Teaching and Learning
~ 22 ~
www.njctl.org
Name: ___________________________________
Two Digit Addition – Regrouping without Blocks
Classwork
Directions: Add. Remember if 9 or more, move the ten next door.
1.
2.
28
+56
4.
3.
37
+54
5.
55
+28
7.
6.
64
+27
8.
81
+19
NJ Center for Teaching and Learning
46
+45
73
+17
9.
59
+38
~ 23 ~
12
+79
www.njctl.org
Name: ___________________________________
Two Digit Addition – Intro to Regrouping
Homework
Directions: Add. Remember if 9 or more, move the ten next door.
First add the ones. If 9 or more, bring the tens next door by writing it in the box
at the top of the tens. Then add the tens. Be sure to line up all the numbers.
2.
2.
28
+56
5.
3.
37
+54
5.
55
+28
8.
6.
64
+27
8.
81
+19
NJ Center for Teaching and Learning
46
+45
73
+17
9.
59
+38
~ 24 ~
12
+79
www.njctl.org
Name: ___________________________________
Two Digit Addition – More Regrouping
Classwork
Directions: Add
1.
25
+38
2.
56
+27
3.
43
+21
4.
17
+18
5.
47
+29
6.
32
+44
7.
53
+48
8.
77
+19
9.
87
+13
10.
35
+55
NJ Center for Teaching and Learning
11.
75
+43
~ 25 ~
12.
49
+49
www.njctl.org
Name: ___________________________________
Two Digit Addition – More Regrouping
Homework
Directions: Add
1.
15
+58
2.
48
+17
3.
60
+21
4.
71
+ 9
5.
26
+47
6.
59
+35
7.
24
+ 4
8.
82
+19
9.
37
+26
10.
46
+28
NJ Center for Teaching and Learning
11.
35
+ 7
~ 26 ~
12.
13
+59
www.njctl.org