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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 940 · 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. 1.511 − 491 =
  2. 2.220 − 179 =
  3. 3.202 − 190 =
  4. 4.307 − 294 =
  5. 5.103 − 81 =
  6. 6.81 − 70 =
  7. 7.302 − 295 =
  8. 8.80 − 38 =
  9. 9.102 − 61 =
  10. 10.78 − 27 =
  11. 11.1028 − 989 =
  12. 12.508 − 489 =
  13. 13.1016 − 985 =
  14. 14.108 − 87 =
  15. 15.1019 − 996 =
  16. 16.526 − 476 =
  17. 17.1014 − 998 =
  18. 18.105 − 77 =
  19. 19.105 − 66 =
  20. 20.305 − 277 =
  21. 21.121 − 77 =
  22. 22.104 − 92 =
  23. 23.124 − 89 =
  24. 24.100 − 63 =
  25. 25.108 − 64 =
  26. 26.504 − 496 =
  27. 27.304 − 284 =
  28. 28.130 − 85 =
  29. 29.109 − 94 =
  30. 30.99 − 78 =
  31. 31.56 − 26 =
  32. 32.107 − 55 =
  33. 33.516 − 495 =
  34. 34.79 − 43 =
  35. 35.303 − 298 =
  36. 36.509 − 477 =
  37. 37.530 − 496 =
  38. 38.130 − 77 =
  39. 39.317 − 298 =
  40. 40.316 − 289 =

Answer key

  1. 20
  2. 41
  3. 12
  4. 13
  5. 22
  6. 11
  7. 7
  8. 42
  9. 41
  10. 51
  11. 39
  12. 19
  13. 31
  14. 21
  15. 23
  16. 50
  17. 16
  18. 28
  19. 39
  20. 28
  21. 44
  22. 12
  23. 35
  24. 37
  25. 44
  26. 8
  27. 20
  28. 45
  29. 15
  30. 21
  31. 30
  32. 52
  33. 21
  34. 36
  35. 5
  36. 32
  37. 34
  38. 53
  39. 19
  40. 27

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