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Subtraction Within 100

Grade 2 · Building confidence · 14 questions · Version PG-11V80N0-1N26

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1.59 - 0 =
2.68 - 30 =
3.79 - 30 =
4.23 - 8 =
5.50 - 44 =
6.94 - 24 =
7.74 - 31 =
8.73 - 62 =
9.98 - 61 =
10.46 - 34 =
11.60 - 15 =
12.8 - 7 =
13.37 - 5 =
14.43 - 23 =

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 12
  1. 59 - 0 =59
  2. 68 - 30 =38
  3. 79 - 30 =49
  4. 23 - 8 =15
  5. 50 - 44 =6
  6. 94 - 24 =70
  7. 74 - 31 =43
  8. 73 - 62 =11
  9. 98 - 61 =37
  10. 46 - 34 =12
  11. 60 - 15 =45
  12. 8 - 7 =1
  13. 37 - 5 =32
  14. 43 - 23 =20

Worked example

73 - 28 = 45. Regroup 7 tens 3 ones as 6 tens 13 ones.

Common mistake

Subtracting the smaller digit from the larger digit in each column regardless of order.

Helpful hint

Line up place values before subtracting.