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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 627 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.123 − 92 =
  2. 2.221 − 197 =
  3. 3.322 − 286 =
  4. 4.65 − 44 =
  5. 5.119 − 88 =
  6. 6.1021 − 979 =
  7. 7.79 − 41 =
  8. 8.106 − 71 =
  9. 9.109 − 85 =
  10. 10.78 − 28 =
  11. 11.115 − 98 =
  12. 12.201 − 177 =
  13. 13.303 − 293 =
  14. 14.51 − 42 =
  15. 15.88 − 56 =
  16. 16.102 − 77 =
  17. 17.201 − 197 =
  18. 18.307 − 278 =
  19. 19.502 − 486 =
  20. 20.56 − 34 =
  21. 21.1023 − 976 =
  22. 22.509 − 495 =
  23. 23.57 − 37 =
  24. 24.68 − 29 =
  25. 25.113 − 81 =
  26. 26.78 − 42 =
  27. 27.517 − 497 =
  28. 28.81 − 77 =
  29. 29.94 − 56 =
  30. 30.81 − 72 =
  31. 31.1018 − 993 =
  32. 32.1011 − 980 =
  33. 33.523 − 483 =
  34. 34.56 − 26 =
  35. 35.314 − 286 =
  36. 36.504 − 483 =
  37. 37.527 − 486 =
  38. 38.100 − 62 =
  39. 39.528 − 486 =
  40. 40.63 − 47 =

Answer key

  1. 31
  2. 24
  3. 36
  4. 21
  5. 31
  6. 42
  7. 38
  8. 35
  9. 24
  10. 50
  11. 17
  12. 24
  13. 10
  14. 9
  15. 32
  16. 25
  17. 4
  18. 29
  19. 16
  20. 22
  21. 47
  22. 14
  23. 20
  24. 39
  25. 32
  26. 36
  27. 20
  28. 4
  29. 38
  30. 9
  31. 25
  32. 31
  33. 40
  34. 30
  35. 28
  36. 21
  37. 41
  38. 38
  39. 42
  40. 16

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