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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 215 · 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. 1.311 − 280 =
  2. 2.121 − 80 =
  3. 3.326 − 291 =
  4. 4.317 − 292 =
  5. 5.62 − 36 =
  6. 6.63 − 40 =
  7. 7.53 − 48 =
  8. 8.84 − 70 =
  9. 9.215 − 198 =
  10. 10.82 − 75 =
  11. 11.226 − 197 =
  12. 12.221 − 181 =
  13. 13.1025 − 995 =
  14. 14.128 − 98 =
  15. 15.121 − 98 =
  16. 16.218 − 179 =
  17. 17.309 − 282 =
  18. 18.329 − 290 =
  19. 19.105 − 83 =
  20. 20.81 − 61 =
  21. 21.114 − 86 =
  22. 22.503 − 495 =
  23. 23.69 − 31 =
  24. 24.222 − 182 =
  25. 25.229 − 190 =
  26. 26.55 − 40 =
  27. 27.82 − 71 =
  28. 28.88 − 68 =
  29. 29.209 − 175 =
  30. 30.301 − 278 =
  31. 31.517 − 477 =
  32. 32.88 − 77 =
  33. 33.76 − 37 =
  34. 34.87 − 67 =
  35. 35.73 − 35 =
  36. 36.1011 − 986 =
  37. 37.56 − 33 =
  38. 38.91 − 64 =
  39. 39.54 − 36 =
  40. 40.109 − 63 =

Answer key

  1. 31
  2. 41
  3. 35
  4. 25
  5. 26
  6. 23
  7. 5
  8. 14
  9. 17
  10. 7
  11. 29
  12. 40
  13. 30
  14. 30
  15. 23
  16. 39
  17. 27
  18. 39
  19. 22
  20. 20
  21. 28
  22. 8
  23. 38
  24. 40
  25. 39
  26. 15
  27. 11
  28. 20
  29. 34
  30. 23
  31. 40
  32. 11
  33. 39
  34. 20
  35. 38
  36. 25
  37. 23
  38. 27
  39. 18
  40. 46

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