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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 52 · 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. 1.1029 − 989 =
  2. 2.70 − 44 =
  3. 3.52 − 46 =
  4. 4.208 − 191 =
  5. 5.306 − 298 =
  6. 6.326 − 294 =
  7. 7.108 − 75 =
  8. 8.202 − 186 =
  9. 9.106 − 61 =
  10. 10.305 − 275 =
  11. 11.130 − 89 =
  12. 12.1021 − 994 =
  13. 13.302 − 297 =
  14. 14.114 − 82 =
  15. 15.311 − 295 =
  16. 16.62 − 28 =
  17. 17.95 − 69 =
  18. 18.529 − 483 =
  19. 19.117 − 81 =
  20. 20.77 − 43 =
  21. 21.213 − 195 =
  22. 22.1020 − 977 =
  23. 23.216 − 179 =
  24. 24.97 − 60 =
  25. 25.107 − 84 =
  26. 26.70 − 48 =
  27. 27.526 − 476 =
  28. 28.71 − 26 =
  29. 29.103 − 89 =
  30. 30.90 − 61 =
  31. 31.513 − 484 =
  32. 32.521 − 479 =
  33. 33.74 − 34 =
  34. 34.58 − 40 =
  35. 35.106 − 63 =
  36. 36.71 − 42 =
  37. 37.311 − 298 =
  38. 38.90 − 73 =
  39. 39.1018 − 990 =
  40. 40.1014 − 997 =

Answer key

  1. 40
  2. 26
  3. 6
  4. 17
  5. 8
  6. 32
  7. 33
  8. 16
  9. 45
  10. 30
  11. 41
  12. 27
  13. 5
  14. 32
  15. 16
  16. 34
  17. 26
  18. 46
  19. 36
  20. 34
  21. 18
  22. 43
  23. 37
  24. 37
  25. 23
  26. 22
  27. 50
  28. 45
  29. 14
  30. 29
  31. 29
  32. 42
  33. 40
  34. 18
  35. 43
  36. 29
  37. 13
  38. 17
  39. 28
  40. 17

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