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Subtraction Within 10

Grade 1 · Stretch challenge · 12 questions · Version PG-3H64RO-DZDO

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1.9 - 9 =
2.4 - 4 =
3.3 - 2 =
4.1 - 0 =
5.10 - 3 =
6.1 - 1 =
7.7 - 0 =
8.2 - 1 =
9.6 - 6 =
10.3 - 3 =
11.8 - 4 =
12.9 - 7 =

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 11
  1. 9 - 9 =0
  2. 4 - 4 =0
  3. 3 - 2 =1
  4. 1 - 0 =1
  5. 10 - 3 =7
  6. 1 - 1 =0
  7. 7 - 0 =7
  8. 2 - 1 =1
  9. 6 - 6 =0
  10. 3 - 3 =0
  11. 8 - 4 =4
  12. 9 - 7 =2

Worked example

9 - 4 = 5. Count back four from 9: 8, 7, 6, 5.

Common mistake

Counting the starting number as one of the steps back.

Helpful hint

Count backward one step for each amount taken away.