2-Digit Addition in Expanded Form worksheet for math practice.

Let’s work through each problem step by step.

We’re doing 2-digit addition in expanded form. That means we break each number into tens and ones, add the tens together, add the ones together, then combine them for the final answer.

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Problem 1: 25 + 42

Break down:
- 25 = 20 + 5
- 42 = 40 + 2

Add tens: 20 + 40 = 60
Add ones: 5 + 2 = 7
Combine: 60 + 7 = 67

So:
25 = 20 + 5
42 = 40 + 2
67 = 60 + 7

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Problem 2: 56 + 43

Break down:
- 56 = 50 + 6
- 43 = 40 + 3

Add tens: 50 + 40 = 90
Add ones: 6 + 3 = 9
Combine: 90 + 9 = 99

So:
56 = 50 + 6
43 = 40 + 3
99 = 90 + 9

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Problem 3: 73 + 25

Break down:
- 73 = 70 + 3
- 25 = 20 + 5

Add tens: 70 + 20 = 90
Add ones: 3 + 5 = 8
Combine: 90 + 8 = 98

So:
73 = 70 + 3
25 = 20 + 5
98 = 90 + 8

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Problem 4: 36 + 21

Break down:
- 36 = 30 + 6
- 21 = 20 + 1

Add tens: 30 + 20 = 50
Add ones: 6 + 1 = 7
Combine: 50 + 7 = 57

So:
36 = 30 + 6
21 = 20 + 1
57 = 50 + 7

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Problem 5: 62 + 27

Break down:
- 62 = 60 + 2
- 27 = 20 + 7

Add tens: 60 + 20 = 80
Add ones: 2 + 7 = 9
Combine: 80 + 9 = 89

So:
62 = 60 + 2
27 = 20 + 7
89 = 80 + 9

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Problem 6: 45 + 32

Break down:
- 45 = 40 + 5
- 32 = 30 + 2

Add tens: 40 + 30 = 70
Add ones: 5 + 2 = 7
Combine: 70 + 7 = 77

So:
45 = 40 + 5
32 = 30 + 2
77 = 70 + 7

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Problem 7: 38 + 31

Break down:
- 38 = 30 + 8
- 31 = 30 + 1

Add tens: 30 + 30 = 60
Add ones: 8 + 1 = 9
Combine: 60 + 9 = 69

So:
38 = 30 + 8
31 = 30 + 1
69 = 60 + 9

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All problems solved correctly.

Final Answer:
25 = 20 + 5
+ 42 = 40 + 2
67 = 60 + 7

56 = 50 + 6
+ 43 = 40 + 3
99 = 90 + 9

73 = 70 + 3
+ 25 = 20 + 5
98 = 90 + 8

36 = 30 + 6
+ 21 = 20 + 1
57 = 50 + 7

62 = 60 + 2
+ 27 = 20 + 7
89 = 80 + 9

45 = 40 + 5
+ 32 = 30 + 2
77 = 70 + 7

38 = 30 + 8
+ 31 = 30 + 1
69 = 60 + 9