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Subtraction Within 100

Grade 2 · Stretch challenge · 14 questions · Version PG-BQEIRL-Y5PE

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1.8 - 3 =
2.2 - 2 =
3.1 - 1 =
4.8 - 4 =
5.64 - 57 =
6.80 - 70 =
7.30 - 0 =
8.8 - 0 =
9.94 - 9 =
10.59 - 22 =
11.29 - 6 =
12.49 - 30 =
13.92 - 27 =
14.34 - 11 =

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 6
  1. 8 - 3 =5
  2. 2 - 2 =0
  3. 1 - 1 =0
  4. 8 - 4 =4
  5. 64 - 57 =7
  6. 80 - 70 =10
  7. 30 - 0 =30
  8. 8 - 0 =8
  9. 94 - 9 =85
  10. 59 - 22 =37
  11. 29 - 6 =23
  12. 49 - 30 =19
  13. 92 - 27 =65
  14. 34 - 11 =23

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.