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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 67 · 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. 1.1019 − 995 =
  2. 2.517 − 489 =
  3. 3.1005 − 987 =
  4. 4.103 − 78 =
  5. 5.211 − 178 =
  6. 6.526 − 493 =
  7. 7.88 − 64 =
  8. 8.109 − 70 =
  9. 9.210 − 180 =
  10. 10.130 − 78 =
  11. 11.87 − 78 =
  12. 12.114 − 76 =
  13. 13.118 − 89 =
  14. 14.525 − 491 =
  15. 15.106 − 71 =
  16. 16.74 − 44 =
  17. 17.63 − 38 =
  18. 18.520 − 485 =
  19. 19.103 − 95 =
  20. 20.315 − 278 =
  21. 21.114 − 97 =
  22. 22.1007 − 992 =
  23. 23.79 − 47 =
  24. 24.81 − 75 =
  25. 25.51 − 44 =
  26. 26.111 − 90 =
  27. 27.130 − 90 =
  28. 28.319 − 294 =
  29. 29.306 − 285 =
  30. 30.326 − 286 =
  31. 31.502 − 493 =
  32. 32.107 − 72 =
  33. 33.114 − 83 =
  34. 34.52 − 30 =
  35. 35.213 − 175 =
  36. 36.1010 − 996 =
  37. 37.513 − 475 =
  38. 38.120 − 93 =
  39. 39.224 − 198 =
  40. 40.97 − 78 =

Answer key

  1. 24
  2. 28
  3. 18
  4. 25
  5. 33
  6. 33
  7. 24
  8. 39
  9. 30
  10. 52
  11. 9
  12. 38
  13. 29
  14. 34
  15. 35
  16. 30
  17. 25
  18. 35
  19. 8
  20. 37
  21. 17
  22. 15
  23. 32
  24. 6
  25. 7
  26. 21
  27. 40
  28. 25
  29. 21
  30. 40
  31. 9
  32. 35
  33. 31
  34. 22
  35. 38
  36. 14
  37. 38
  38. 27
  39. 26
  40. 19

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