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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 501 · 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. 1.99 − 64 =
  2. 2.58 − 46 =
  3. 3.312 − 291 =
  4. 4.1025 − 984 =
  5. 5.77 − 43 =
  6. 6.82 − 77 =
  7. 7.528 − 492 =
  8. 8.1026 − 995 =
  9. 9.73 − 32 =
  10. 10.1006 − 996 =
  11. 11.306 − 284 =
  12. 12.509 − 479 =
  13. 13.203 − 189 =
  14. 14.218 − 196 =
  15. 15.53 − 47 =
  16. 16.68 − 25 =
  17. 17.505 − 475 =
  18. 18.78 − 45 =
  19. 19.89 − 57 =
  20. 20.55 − 42 =
  21. 21.1026 − 989 =
  22. 22.205 − 198 =
  23. 23.72 − 46 =
  24. 24.100 − 71 =
  25. 25.1015 − 979 =
  26. 26.330 − 293 =
  27. 27.118 − 93 =
  28. 28.89 − 66 =
  29. 29.518 − 486 =
  30. 30.1006 − 992 =
  31. 31.79 − 33 =
  32. 32.309 − 283 =
  33. 33.82 − 64 =
  34. 34.322 − 290 =
  35. 35.85 − 64 =
  36. 36.229 − 190 =
  37. 37.55 − 31 =
  38. 38.522 − 487 =
  39. 39.77 − 35 =
  40. 40.114 − 75 =

Answer key

  1. 35
  2. 12
  3. 21
  4. 41
  5. 34
  6. 5
  7. 36
  8. 31
  9. 41
  10. 10
  11. 22
  12. 30
  13. 14
  14. 22
  15. 6
  16. 43
  17. 30
  18. 33
  19. 32
  20. 13
  21. 37
  22. 7
  23. 26
  24. 29
  25. 36
  26. 37
  27. 25
  28. 23
  29. 32
  30. 14
  31. 46
  32. 26
  33. 18
  34. 32
  35. 21
  36. 39
  37. 24
  38. 35
  39. 42
  40. 39

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