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Subtraction Within 100

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

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1.46 - 40 =
2.56 - 0 =
3.73 - 42 =
4.44 - 23 =
5.28 - 17 =
6.75 - 28 =
7.58 - 29 =
8.100 - 21 =
9.23 - 20 =
10.45 - 14 =
11.54 - 34 =
12.48 - 45 =
13.29 - 26 =
14.74 - 22 =

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 5
  1. 46 - 40 =6
  2. 56 - 0 =56
  3. 73 - 42 =31
  4. 44 - 23 =21
  5. 28 - 17 =11
  6. 75 - 28 =47
  7. 58 - 29 =29
  8. 100 - 21 =79
  9. 23 - 20 =3
  10. 45 - 14 =31
  11. 54 - 34 =20
  12. 48 - 45 =3
  13. 29 - 26 =3
  14. 74 - 22 =52

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.