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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 456 · 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. 1.118 − 83 =
  2. 2.115 − 80 =
  3. 3.56 − 34 =
  4. 4.516 − 483 =
  5. 5.320 − 283 =
  6. 6.80 − 27 =
  7. 7.53 − 44 =
  8. 8.509 − 496 =
  9. 9.101 − 82 =
  10. 10.205 − 182 =
  11. 11.52 − 38 =
  12. 12.303 − 276 =
  13. 13.302 − 295 =
  14. 14.222 − 180 =
  15. 15.125 − 76 =
  16. 16.61 − 29 =
  17. 17.85 − 74 =
  18. 18.310 − 297 =
  19. 19.524 − 490 =
  20. 20.83 − 64 =
  21. 21.84 − 62 =
  22. 22.105 − 64 =
  23. 23.304 − 279 =
  24. 24.110 − 87 =
  25. 25.221 − 196 =
  26. 26.86 − 76 =
  27. 27.58 − 43 =
  28. 28.110 − 58 =
  29. 29.321 − 284 =
  30. 30.314 − 286 =
  31. 31.503 − 480 =
  32. 32.123 − 81 =
  33. 33.201 − 185 =
  34. 34.59 − 38 =
  35. 35.66 − 48 =
  36. 36.526 − 485 =
  37. 37.208 − 190 =
  38. 38.223 − 179 =
  39. 39.67 − 46 =
  40. 40.201 − 175 =

Answer key

  1. 35
  2. 35
  3. 22
  4. 33
  5. 37
  6. 53
  7. 9
  8. 13
  9. 19
  10. 23
  11. 14
  12. 27
  13. 7
  14. 42
  15. 49
  16. 32
  17. 11
  18. 13
  19. 34
  20. 19
  21. 22
  22. 41
  23. 25
  24. 23
  25. 25
  26. 10
  27. 15
  28. 52
  29. 37
  30. 28
  31. 23
  32. 42
  33. 16
  34. 21
  35. 18
  36. 41
  37. 18
  38. 44
  39. 21
  40. 26

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