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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 787 · 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. 1.90 − 77 =
  2. 2.311 − 295 =
  3. 3.527 − 494 =
  4. 4.117 − 83 =
  5. 5.102 − 80 =
  6. 6.1017 − 977 =
  7. 7.305 − 296 =
  8. 8.1019 − 983 =
  9. 9.509 − 497 =
  10. 10.506 − 476 =
  11. 11.303 − 294 =
  12. 12.326 − 294 =
  13. 13.71 − 35 =
  14. 14.503 − 496 =
  15. 15.88 − 63 =
  16. 16.508 − 487 =
  17. 17.119 − 86 =
  18. 18.83 − 74 =
  19. 19.109 − 77 =
  20. 20.108 − 98 =
  21. 21.530 − 491 =
  22. 22.323 − 278 =
  23. 23.75 − 27 =
  24. 24.324 − 285 =
  25. 25.219 − 182 =
  26. 26.1018 − 992 =
  27. 27.1026 − 985 =
  28. 28.526 − 496 =
  29. 29.1006 − 984 =
  30. 30.99 − 77 =
  31. 31.227 − 182 =
  32. 32.518 − 498 =
  33. 33.109 − 57 =
  34. 34.104 − 73 =
  35. 35.1027 − 993 =
  36. 36.78 − 39 =
  37. 37.222 − 186 =
  38. 38.104 − 63 =
  39. 39.81 − 75 =
  40. 40.325 − 287 =

Answer key

  1. 13
  2. 16
  3. 33
  4. 34
  5. 22
  6. 40
  7. 9
  8. 36
  9. 12
  10. 30
  11. 9
  12. 32
  13. 36
  14. 7
  15. 25
  16. 21
  17. 33
  18. 9
  19. 32
  20. 10
  21. 39
  22. 45
  23. 48
  24. 39
  25. 37
  26. 26
  27. 41
  28. 30
  29. 22
  30. 22
  31. 45
  32. 20
  33. 52
  34. 31
  35. 34
  36. 39
  37. 36
  38. 41
  39. 6
  40. 38

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