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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 626 · 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. 1.502 − 496 =
  2. 2.315 − 294 =
  3. 3.109 − 61 =
  4. 4.102 − 97 =
  5. 5.78 − 43 =
  6. 6.507 − 486 =
  7. 7.56 − 26 =
  8. 8.1015 − 985 =
  9. 9.307 − 289 =
  10. 10.128 − 92 =
  11. 11.82 − 62 =
  12. 12.74 − 31 =
  13. 13.307 − 276 =
  14. 14.329 − 281 =
  15. 15.1015 − 998 =
  16. 16.101 − 78 =
  17. 17.107 − 96 =
  18. 18.511 − 479 =
  19. 19.305 − 293 =
  20. 20.68 − 34 =
  21. 21.1026 − 976 =
  22. 22.321 − 286 =
  23. 23.507 − 484 =
  24. 24.525 − 483 =
  25. 25.1015 − 976 =
  26. 26.1026 − 990 =
  27. 27.524 − 487 =
  28. 28.97 − 71 =
  29. 29.104 − 97 =
  30. 30.522 − 498 =
  31. 31.104 − 85 =
  32. 32.109 − 56 =
  33. 33.114 − 86 =
  34. 34.1006 − 988 =
  35. 35.59 − 31 =
  36. 36.127 − 97 =
  37. 37.55 − 41 =
  38. 38.77 − 29 =
  39. 39.80 − 27 =
  40. 40.502 − 484 =

Answer key

  1. 6
  2. 21
  3. 48
  4. 5
  5. 35
  6. 21
  7. 30
  8. 30
  9. 18
  10. 36
  11. 20
  12. 43
  13. 31
  14. 48
  15. 17
  16. 23
  17. 11
  18. 32
  19. 12
  20. 34
  21. 50
  22. 35
  23. 23
  24. 42
  25. 39
  26. 36
  27. 37
  28. 26
  29. 7
  30. 24
  31. 19
  32. 53
  33. 28
  34. 18
  35. 28
  36. 30
  37. 14
  38. 48
  39. 53
  40. 18

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