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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 320 · 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. 1.515 − 482 =
  2. 2.513 − 493 =
  3. 3.60 − 35 =
  4. 4.226 − 186 =
  5. 5.215 − 178 =
  6. 6.524 − 490 =
  7. 7.312 − 285 =
  8. 8.62 − 36 =
  9. 9.1007 − 988 =
  10. 10.502 − 497 =
  11. 11.83 − 60 =
  12. 12.530 − 498 =
  13. 13.104 − 77 =
  14. 14.71 − 43 =
  15. 15.91 − 64 =
  16. 16.204 − 195 =
  17. 17.210 − 193 =
  18. 18.517 − 488 =
  19. 19.1003 − 987 =
  20. 20.515 − 491 =
  21. 21.329 − 284 =
  22. 22.51 − 41 =
  23. 23.328 − 275 =
  24. 24.88 − 55 =
  25. 25.1025 − 995 =
  26. 26.518 − 498 =
  27. 27.310 − 293 =
  28. 28.210 − 179 =
  29. 29.517 − 475 =
  30. 30.89 − 55 =
  31. 31.112 − 86 =
  32. 32.502 − 496 =
  33. 33.102 − 58 =
  34. 34.515 − 498 =
  35. 35.109 − 82 =
  36. 36.1025 − 984 =
  37. 37.87 − 57 =
  38. 38.84 − 63 =
  39. 39.101 − 78 =
  40. 40.316 − 297 =

Answer key

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

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