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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 432 · 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. 1.321 − 281 =
  2. 2.312 − 282 =
  3. 3.304 − 277 =
  4. 4.81 − 70 =
  5. 5.328 − 279 =
  6. 6.201 − 192 =
  7. 7.55 − 37 =
  8. 8.1016 − 980 =
  9. 9.301 − 291 =
  10. 10.525 − 495 =
  11. 11.527 − 492 =
  12. 12.309 − 294 =
  13. 13.1004 − 987 =
  14. 14.205 − 175 =
  15. 15.220 − 178 =
  16. 16.307 − 278 =
  17. 17.128 − 97 =
  18. 18.311 − 292 =
  19. 19.124 − 78 =
  20. 20.128 − 94 =
  21. 21.123 − 82 =
  22. 22.1009 − 977 =
  23. 23.503 − 495 =
  24. 24.330 − 297 =
  25. 25.210 − 180 =
  26. 26.202 − 196 =
  27. 27.210 − 178 =
  28. 28.307 − 294 =
  29. 29.209 − 197 =
  30. 30.519 − 480 =
  31. 31.94 − 71 =
  32. 32.229 − 177 =
  33. 33.1012 − 981 =
  34. 34.1005 − 984 =
  35. 35.309 − 276 =
  36. 36.122 − 90 =
  37. 37.1002 − 994 =
  38. 38.61 − 29 =
  39. 39.77 − 28 =
  40. 40.105 − 87 =

Answer key

  1. 40
  2. 30
  3. 27
  4. 11
  5. 49
  6. 9
  7. 18
  8. 36
  9. 10
  10. 30
  11. 35
  12. 15
  13. 17
  14. 30
  15. 42
  16. 29
  17. 31
  18. 19
  19. 46
  20. 34
  21. 41
  22. 32
  23. 8
  24. 33
  25. 30
  26. 6
  27. 32
  28. 13
  29. 12
  30. 39
  31. 23
  32. 52
  33. 31
  34. 21
  35. 33
  36. 32
  37. 8
  38. 32
  39. 49
  40. 18

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