Subtraction within 100

Subtract numbers up to 100, including borrowing

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Date:

Try each question. If you're stuck, leave it and come back. The answer key is on the last page.

1
What is 56 take away 23? 56 - 23 = ___
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2
Tom had 45 stickers. He gave 12 to his friend. How many does he have left? A) 33 B) 57 C) 23 D) 43
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3
What is 78 - 26? 78 - 26 = ___
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4
What is 30 - 10? 30 - 10 = ___
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5
Put these answers in order from smallest to largest. Put these in order: 90 - 60, 80 - 45, 70 - 25, 60 - 5
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6
What is 67 - 19? A) 48 B) 58 C) 46 D) 52
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7
What is 100 take away 37? 100 - 37 = ___
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8
What is 84 - 27? 84 - 27 = ___
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9
What is 91 - 35? 91 - 35 = ___
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10
What is 100 - 37? 100 - 37 = ___
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Answer key

Subtraction within 100 · for parents and teachers

1
33
56 - 23 = 33. Take away tens then ones.
2
33
45 - 12 = 33. Tom has 33 stickers left.
3
52
78 - 26 = 52. No borrowing needed because 8 > 6.
4
20
30 - 10 = 20.
5
90 - 60, 80 - 45, 70 - 25, 60 - 5
90-60=30, 80-45=35, 70-25=45, 60-5=55. In order: 30, 35, 45, 55.
6
48
67 - 19 = 48. Borrow 1 ten so 7 ones becomes 17 ones, then 17 - 9 = 8.
7
63
100 - 37 = 63. You can count up from 37 to 100 to check.
8
57
84 - 27 = 57.
9
56
91 - 35 = 56.
10
63
100 - 37 = 63.