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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 862 · 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. 1.508 − 493 =
  2. 2.109 − 62 =
  3. 3.85 − 76 =
  4. 4.316 − 279 =
  5. 5.70 − 30 =
  6. 6.125 − 93 =
  7. 7.507 − 475 =
  8. 8.1003 − 982 =
  9. 9.103 − 57 =
  10. 10.515 − 498 =
  11. 11.230 − 177 =
  12. 12.307 − 293 =
  13. 13.201 − 176 =
  14. 14.307 − 280 =
  15. 15.105 − 66 =
  16. 16.1018 − 988 =
  17. 17.509 − 487 =
  18. 18.1002 − 996 =
  19. 19.60 − 36 =
  20. 20.1008 − 995 =
  21. 21.106 − 69 =
  22. 22.84 − 77 =
  23. 23.502 − 492 =
  24. 24.110 − 78 =
  25. 25.302 − 284 =
  26. 26.1021 − 982 =
  27. 27.70 − 27 =
  28. 28.513 − 484 =
  29. 29.1003 − 985 =
  30. 30.1006 − 979 =
  31. 31.120 − 87 =
  32. 32.1001 − 998 =
  33. 33.203 − 195 =
  34. 34.214 − 190 =
  35. 35.302 − 276 =
  36. 36.208 − 191 =
  37. 37.113 − 97 =
  38. 38.524 − 495 =
  39. 39.302 − 281 =
  40. 40.89 − 71 =

Answer key

  1. 15
  2. 47
  3. 9
  4. 37
  5. 40
  6. 32
  7. 32
  8. 21
  9. 46
  10. 17
  11. 53
  12. 14
  13. 25
  14. 27
  15. 39
  16. 30
  17. 22
  18. 6
  19. 24
  20. 13
  21. 37
  22. 7
  23. 10
  24. 32
  25. 18
  26. 39
  27. 43
  28. 29
  29. 18
  30. 27
  31. 33
  32. 3
  33. 8
  34. 24
  35. 26
  36. 17
  37. 16
  38. 29
  39. 21
  40. 18

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