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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 439 · 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. 1.86 − 63 =
  2. 2.66 − 46 =
  3. 3.125 − 94 =
  4. 4.301 − 281 =
  5. 5.1028 − 975 =
  6. 6.220 − 181 =
  7. 7.311 − 294 =
  8. 8.85 − 67 =
  9. 9.83 − 74 =
  10. 10.507 − 482 =
  11. 11.210 − 175 =
  12. 12.518 − 478 =
  13. 13.307 − 285 =
  14. 14.1002 − 984 =
  15. 15.305 − 291 =
  16. 16.52 − 29 =
  17. 17.62 − 25 =
  18. 18.88 − 65 =
  19. 19.102 − 65 =
  20. 20.90 − 70 =
  21. 21.122 − 79 =
  22. 22.224 − 184 =
  23. 23.303 − 275 =
  24. 24.95 − 60 =
  25. 25.101 − 76 =
  26. 26.307 − 284 =
  27. 27.524 − 485 =
  28. 28.105 − 72 =
  29. 29.101 − 92 =
  30. 30.321 − 287 =
  31. 31.69 − 47 =
  32. 32.207 − 177 =
  33. 33.52 − 45 =
  34. 34.1011 − 982 =
  35. 35.89 − 65 =
  36. 36.516 − 487 =
  37. 37.128 − 79 =
  38. 38.72 − 29 =
  39. 39.302 − 285 =
  40. 40.98 − 55 =

Answer key

  1. 23
  2. 20
  3. 31
  4. 20
  5. 53
  6. 39
  7. 17
  8. 18
  9. 9
  10. 25
  11. 35
  12. 40
  13. 22
  14. 18
  15. 14
  16. 23
  17. 37
  18. 23
  19. 37
  20. 20
  21. 43
  22. 40
  23. 28
  24. 35
  25. 25
  26. 23
  27. 39
  28. 33
  29. 9
  30. 34
  31. 22
  32. 30
  33. 7
  34. 29
  35. 24
  36. 29
  37. 49
  38. 43
  39. 17
  40. 43

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