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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 458 · 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. 2.1011 − 993 =
  3. 3.69 − 37 =
  4. 4.106 − 78 =
  5. 5.304 − 279 =
  6. 6.69 − 42 =
  7. 7.79 − 26 =
  8. 8.71 − 38 =
  9. 9.107 − 57 =
  10. 10.122 − 89 =
  11. 11.220 − 178 =
  12. 12.321 − 298 =
  13. 13.59 − 38 =
  14. 14.302 − 294 =
  15. 15.213 − 178 =
  16. 16.326 − 291 =
  17. 17.86 − 62 =
  18. 18.84 − 70 =
  19. 19.89 − 58 =
  20. 20.81 − 70 =
  21. 21.108 − 76 =
  22. 22.1024 − 980 =
  23. 23.216 − 189 =
  24. 24.210 − 179 =
  25. 25.85 − 73 =
  26. 26.518 − 481 =
  27. 27.91 − 76 =
  28. 28.504 − 498 =
  29. 29.525 − 483 =
  30. 30.51 − 39 =
  31. 31.502 − 479 =
  32. 32.104 − 77 =
  33. 33.1018 − 994 =
  34. 34.314 − 296 =
  35. 35.1010 − 983 =
  36. 36.507 − 486 =
  37. 37.108 − 67 =
  38. 38.312 − 289 =
  39. 39.228 − 195 =
  40. 40.1012 − 998 =

Answer key

  1. 33
  2. 18
  3. 32
  4. 28
  5. 25
  6. 27
  7. 53
  8. 33
  9. 50
  10. 33
  11. 42
  12. 23
  13. 21
  14. 8
  15. 35
  16. 35
  17. 24
  18. 14
  19. 31
  20. 11
  21. 32
  22. 44
  23. 27
  24. 31
  25. 12
  26. 37
  27. 15
  28. 6
  29. 42
  30. 12
  31. 23
  32. 27
  33. 24
  34. 18
  35. 27
  36. 21
  37. 41
  38. 23
  39. 33
  40. 14

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