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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 365 · 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. 1.327 − 281 =
  2. 2.109 − 74 =
  3. 3.1007 − 995 =
  4. 4.1006 − 984 =
  5. 5.108 − 64 =
  6. 6.313 − 290 =
  7. 7.326 − 282 =
  8. 8.126 − 97 =
  9. 9.507 − 477 =
  10. 10.302 − 293 =
  11. 11.1021 − 994 =
  12. 12.303 − 277 =
  13. 13.513 − 483 =
  14. 14.308 − 281 =
  15. 15.82 − 70 =
  16. 16.1011 − 994 =
  17. 17.81 − 61 =
  18. 18.90 − 76 =
  19. 19.84 − 63 =
  20. 20.98 − 77 =
  21. 21.318 − 280 =
  22. 22.221 − 195 =
  23. 23.119 − 97 =
  24. 24.202 − 192 =
  25. 25.129 − 89 =
  26. 26.527 − 477 =
  27. 27.218 − 188 =
  28. 28.213 − 184 =
  29. 29.126 − 91 =
  30. 30.301 − 276 =
  31. 31.126 − 83 =
  32. 32.79 − 45 =
  33. 33.303 − 293 =
  34. 34.210 − 183 =
  35. 35.54 − 48 =
  36. 36.321 − 281 =
  37. 37.314 − 292 =
  38. 38.1011 − 979 =
  39. 39.302 − 289 =
  40. 40.511 − 480 =

Answer key

  1. 46
  2. 35
  3. 12
  4. 22
  5. 44
  6. 23
  7. 44
  8. 29
  9. 30
  10. 9
  11. 27
  12. 26
  13. 30
  14. 27
  15. 12
  16. 17
  17. 20
  18. 14
  19. 21
  20. 21
  21. 38
  22. 26
  23. 22
  24. 10
  25. 40
  26. 50
  27. 30
  28. 29
  29. 35
  30. 25
  31. 43
  32. 34
  33. 10
  34. 27
  35. 6
  36. 40
  37. 22
  38. 32
  39. 13
  40. 31

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