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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 129 · 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. 1.312 − 276 =
  2. 2.508 − 483 =
  3. 3.230 − 191 =
  4. 4.323 − 290 =
  5. 5.1020 − 995 =
  6. 6.1006 − 997 =
  7. 7.113 − 96 =
  8. 8.89 − 74 =
  9. 9.122 − 88 =
  10. 10.229 − 197 =
  11. 11.107 − 68 =
  12. 12.66 − 27 =
  13. 13.212 − 196 =
  14. 14.510 − 480 =
  15. 15.513 − 481 =
  16. 16.119 − 78 =
  17. 17.1019 − 991 =
  18. 18.98 − 71 =
  19. 19.521 − 489 =
  20. 20.527 − 488 =
  21. 21.1017 − 995 =
  22. 22.90 − 64 =
  23. 23.111 − 83 =
  24. 24.1026 − 981 =
  25. 25.505 − 495 =
  26. 26.325 − 283 =
  27. 27.117 − 78 =
  28. 28.59 − 45 =
  29. 29.107 − 59 =
  30. 30.95 − 64 =
  31. 31.129 − 78 =
  32. 32.527 − 478 =
  33. 33.106 − 68 =
  34. 34.320 − 295 =
  35. 35.526 − 498 =
  36. 36.93 − 67 =
  37. 37.314 − 275 =
  38. 38.211 − 195 =
  39. 39.84 − 65 =
  40. 40.108 − 78 =

Answer key

  1. 36
  2. 25
  3. 39
  4. 33
  5. 25
  6. 9
  7. 17
  8. 15
  9. 34
  10. 32
  11. 39
  12. 39
  13. 16
  14. 30
  15. 32
  16. 41
  17. 28
  18. 27
  19. 32
  20. 39
  21. 22
  22. 26
  23. 28
  24. 45
  25. 10
  26. 42
  27. 39
  28. 14
  29. 48
  30. 31
  31. 51
  32. 49
  33. 38
  34. 25
  35. 28
  36. 26
  37. 39
  38. 16
  39. 19
  40. 30

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