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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 376 · 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. 1.128 − 97 =
  2. 2.509 − 477 =
  3. 3.518 − 497 =
  4. 4.1025 − 979 =
  5. 5.502 − 494 =
  6. 6.517 − 494 =
  7. 7.102 − 95 =
  8. 8.78 − 43 =
  9. 9.60 − 36 =
  10. 10.82 − 64 =
  11. 11.91 − 74 =
  12. 12.126 − 97 =
  13. 13.79 − 28 =
  14. 14.59 − 29 =
  15. 15.1015 − 991 =
  16. 16.1003 − 986 =
  17. 17.529 − 486 =
  18. 18.230 − 198 =
  19. 19.61 − 43 =
  20. 20.104 − 60 =
  21. 21.303 − 281 =
  22. 22.80 − 37 =
  23. 23.113 − 75 =
  24. 24.105 − 78 =
  25. 25.1005 − 989 =
  26. 26.224 − 195 =
  27. 27.1018 − 995 =
  28. 28.306 − 298 =
  29. 29.1025 − 994 =
  30. 30.309 − 293 =
  31. 31.118 − 92 =
  32. 32.218 − 194 =
  33. 33.112 − 95 =
  34. 34.207 − 190 =
  35. 35.1015 − 976 =
  36. 36.222 − 190 =
  37. 37.109 − 85 =
  38. 38.505 − 494 =
  39. 39.308 − 277 =
  40. 40.81 − 60 =

Answer key

  1. 31
  2. 32
  3. 21
  4. 46
  5. 8
  6. 23
  7. 7
  8. 35
  9. 24
  10. 18
  11. 17
  12. 29
  13. 51
  14. 30
  15. 24
  16. 17
  17. 43
  18. 32
  19. 18
  20. 44
  21. 22
  22. 43
  23. 38
  24. 27
  25. 16
  26. 29
  27. 23
  28. 8
  29. 31
  30. 16
  31. 26
  32. 24
  33. 17
  34. 17
  35. 39
  36. 32
  37. 24
  38. 11
  39. 31
  40. 21

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