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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 928 · 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. 1.116 − 79 =
  2. 2.82 − 69 =
  3. 3.91 − 67 =
  4. 4.101 − 78 =
  5. 5.106 − 61 =
  6. 6.303 − 293 =
  7. 7.114 − 83 =
  8. 8.59 − 26 =
  9. 9.1003 − 995 =
  10. 10.108 − 86 =
  11. 11.513 − 496 =
  12. 12.107 − 76 =
  13. 13.74 − 39 =
  14. 14.78 − 37 =
  15. 15.1012 − 989 =
  16. 16.71 − 41 =
  17. 17.314 − 282 =
  18. 18.329 − 298 =
  19. 19.301 − 282 =
  20. 20.62 − 43 =
  21. 21.91 − 57 =
  22. 22.1007 − 981 =
  23. 23.221 − 193 =
  24. 24.1026 − 987 =
  25. 25.228 − 184 =
  26. 26.1001 − 994 =
  27. 27.1005 − 992 =
  28. 28.58 − 34 =
  29. 29.315 − 279 =
  30. 30.90 − 76 =
  31. 31.502 − 490 =
  32. 32.115 − 97 =
  33. 33.1003 − 992 =
  34. 34.318 − 281 =
  35. 35.88 − 71 =
  36. 36.60 − 48 =
  37. 37.509 − 498 =
  38. 38.506 − 496 =
  39. 39.505 − 494 =
  40. 40.310 − 289 =

Answer key

  1. 37
  2. 13
  3. 24
  4. 23
  5. 45
  6. 10
  7. 31
  8. 33
  9. 8
  10. 22
  11. 17
  12. 31
  13. 35
  14. 41
  15. 23
  16. 30
  17. 32
  18. 31
  19. 19
  20. 19
  21. 34
  22. 26
  23. 28
  24. 39
  25. 44
  26. 7
  27. 13
  28. 24
  29. 36
  30. 14
  31. 12
  32. 18
  33. 11
  34. 37
  35. 17
  36. 12
  37. 11
  38. 10
  39. 11
  40. 21

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