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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 110 · 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. 1.314 − 286 =
  2. 2.307 − 295 =
  3. 3.73 − 25 =
  4. 4.81 − 74 =
  5. 5.97 − 66 =
  6. 6.120 − 85 =
  7. 7.218 − 193 =
  8. 8.528 − 478 =
  9. 9.86 − 78 =
  10. 10.314 − 279 =
  11. 11.513 − 482 =
  12. 12.302 − 298 =
  13. 13.68 − 30 =
  14. 14.305 − 291 =
  15. 15.506 − 485 =
  16. 16.217 − 179 =
  17. 17.85 − 68 =
  18. 18.507 − 489 =
  19. 19.321 − 292 =
  20. 20.93 − 76 =
  21. 21.126 − 93 =
  22. 22.305 − 296 =
  23. 23.530 − 476 =
  24. 24.120 − 81 =
  25. 25.205 − 193 =
  26. 26.127 − 76 =
  27. 27.71 − 38 =
  28. 28.95 − 71 =
  29. 29.56 − 32 =
  30. 30.116 − 85 =
  31. 31.515 − 497 =
  32. 32.324 − 281 =
  33. 33.68 − 27 =
  34. 34.84 − 67 =
  35. 35.213 − 190 =
  36. 36.229 − 187 =
  37. 37.201 − 181 =
  38. 38.322 − 276 =
  39. 39.102 − 95 =
  40. 40.229 − 183 =

Answer key

  1. 28
  2. 12
  3. 48
  4. 7
  5. 31
  6. 35
  7. 25
  8. 50
  9. 8
  10. 35
  11. 31
  12. 4
  13. 38
  14. 14
  15. 21
  16. 38
  17. 17
  18. 18
  19. 29
  20. 17
  21. 33
  22. 9
  23. 54
  24. 39
  25. 12
  26. 51
  27. 33
  28. 24
  29. 24
  30. 31
  31. 18
  32. 43
  33. 41
  34. 17
  35. 23
  36. 42
  37. 20
  38. 46
  39. 7
  40. 46

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