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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 597 · 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. 1.121 − 79 =
  2. 2.109 − 78 =
  3. 3.204 − 198 =
  4. 4.503 − 489 =
  5. 5.523 − 492 =
  6. 6.127 − 75 =
  7. 7.71 − 38 =
  8. 8.314 − 280 =
  9. 9.514 − 479 =
  10. 10.102 − 56 =
  11. 11.101 − 80 =
  12. 12.225 − 175 =
  13. 13.79 − 41 =
  14. 14.1030 − 991 =
  15. 15.501 − 480 =
  16. 16.527 − 489 =
  17. 17.109 − 95 =
  18. 18.126 − 84 =
  19. 19.324 − 298 =
  20. 20.59 − 40 =
  21. 21.218 − 183 =
  22. 22.530 − 498 =
  23. 23.305 − 290 =
  24. 24.127 − 80 =
  25. 25.221 − 189 =
  26. 26.97 − 63 =
  27. 27.78 − 31 =
  28. 28.203 − 184 =
  29. 29.522 − 482 =
  30. 30.513 − 484 =
  31. 31.111 − 95 =
  32. 32.529 − 497 =
  33. 33.76 − 41 =
  34. 34.55 − 27 =
  35. 35.1004 − 981 =
  36. 36.310 − 286 =
  37. 37.92 − 55 =
  38. 38.106 − 79 =
  39. 39.114 − 98 =
  40. 40.82 − 75 =

Answer key

  1. 42
  2. 31
  3. 6
  4. 14
  5. 31
  6. 52
  7. 33
  8. 34
  9. 35
  10. 46
  11. 21
  12. 50
  13. 38
  14. 39
  15. 21
  16. 38
  17. 14
  18. 42
  19. 26
  20. 19
  21. 35
  22. 32
  23. 15
  24. 47
  25. 32
  26. 34
  27. 47
  28. 19
  29. 40
  30. 29
  31. 16
  32. 32
  33. 35
  34. 28
  35. 23
  36. 24
  37. 37
  38. 27
  39. 16
  40. 7

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