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Class 1Ages 5–6

Class 1 Subtraction Worksheet (Within 20)

Twenty take-away sums starting from numbers up to 20. Children can count back, use a number line or think of the matching addition fact, which is the strategy we encourage most.

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Maths Guru · Class 1 Subtraction Worksheet (Within 20)

Name: ____________________ Date: ____________ Score: ____ / 20

Subtract. Write the answer on the line.

  1. 20 − 2 = ___
  2. 15 − 10 = ___
  3. 10 − 9 = ___
  4. 20 − 10 = ___
  5. 10 − 1 = ___
  6. 11 − 8 = ___
  7. 11 − 9 = ___
  8. 15 − 3 = ___
  9. 13 − 8 = ___
  10. 9 − 3 = ___
  11. 18 − 9 = ___
  12. 7 − 1 = ___
  13. 14 − 6 = ___
  14. 13 − 9 = ___
  15. 20 − 8 = ___
  16. 14 − 1 = ___
  17. 6 − 6 = ___
  18. 17 − 1 = ___
  19. 19 − 7 = ___
  20. 12 − 9 = ___

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Answer key: Class 1 Subtraction Worksheet (Within 20)

  1. 18
  2. 5
  3. 1
  4. 10
  5. 9
  6. 3
  7. 2
  8. 12
  9. 5
  10. 6
  11. 9
  12. 6
  13. 8
  14. 4
  15. 12
  16. 13
  17. 0
  18. 16
  19. 12
  20. 3

Tip for parents

After each answer, ask them to check by adding back: if 14 − 6 = 8, does 8 + 6 make 14?

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