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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 341 · 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. 1.312 − 290 =
  2. 2.303 − 296 =
  3. 3.81 − 65 =
  4. 4.104 − 64 =
  5. 5.207 − 179 =
  6. 6.504 − 484 =
  7. 7.59 − 44 =
  8. 8.58 − 48 =
  9. 9.104 − 82 =
  10. 10.303 − 292 =
  11. 11.1004 − 995 =
  12. 12.112 − 78 =
  13. 13.105 − 63 =
  14. 14.72 − 31 =
  15. 15.519 − 485 =
  16. 16.101 − 64 =
  17. 17.97 − 69 =
  18. 18.526 − 494 =
  19. 19.72 − 37 =
  20. 20.204 − 190 =
  21. 21.330 − 296 =
  22. 22.303 − 287 =
  23. 23.1030 − 989 =
  24. 24.95 − 55 =
  25. 25.86 − 70 =
  26. 26.87 − 78 =
  27. 27.1005 − 990 =
  28. 28.303 − 290 =
  29. 29.1005 − 995 =
  30. 30.1018 − 995 =
  31. 31.96 − 62 =
  32. 32.307 − 297 =
  33. 33.517 − 488 =
  34. 34.311 − 294 =
  35. 35.62 − 42 =
  36. 36.304 − 297 =
  37. 37.1023 − 986 =
  38. 38.1029 − 995 =
  39. 39.74 − 29 =
  40. 40.313 − 290 =

Answer key

  1. 22
  2. 7
  3. 16
  4. 40
  5. 28
  6. 20
  7. 15
  8. 10
  9. 22
  10. 11
  11. 9
  12. 34
  13. 42
  14. 41
  15. 34
  16. 37
  17. 28
  18. 32
  19. 35
  20. 14
  21. 34
  22. 16
  23. 41
  24. 40
  25. 16
  26. 9
  27. 15
  28. 13
  29. 10
  30. 23
  31. 34
  32. 10
  33. 29
  34. 17
  35. 20
  36. 7
  37. 37
  38. 34
  39. 45
  40. 23

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