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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 483 · 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. 1.506 − 481 =
  2. 2.80 − 45 =
  3. 3.1005 − 998 =
  4. 4.51 − 42 =
  5. 5.1011 − 995 =
  6. 6.213 − 185 =
  7. 7.1028 − 978 =
  8. 8.75 − 45 =
  9. 9.54 − 45 =
  10. 10.72 − 43 =
  11. 11.91 − 73 =
  12. 12.224 − 193 =
  13. 13.101 − 77 =
  14. 14.1026 − 981 =
  15. 15.326 − 284 =
  16. 16.70 − 33 =
  17. 17.84 − 59 =
  18. 18.127 − 83 =
  19. 19.204 − 198 =
  20. 20.104 − 94 =
  21. 21.1025 − 975 =
  22. 22.51 − 44 =
  23. 23.59 − 42 =
  24. 24.112 − 90 =
  25. 25.105 − 68 =
  26. 26.65 − 38 =
  27. 27.501 − 480 =
  28. 28.53 − 48 =
  29. 29.328 − 285 =
  30. 30.502 − 484 =
  31. 31.118 − 80 =
  32. 32.507 − 494 =
  33. 33.77 − 47 =
  34. 34.1007 − 997 =
  35. 35.123 − 87 =
  36. 36.65 − 31 =
  37. 37.322 − 295 =
  38. 38.89 − 64 =
  39. 39.84 − 68 =
  40. 40.84 − 57 =

Answer key

  1. 25
  2. 35
  3. 7
  4. 9
  5. 16
  6. 28
  7. 50
  8. 30
  9. 9
  10. 29
  11. 18
  12. 31
  13. 24
  14. 45
  15. 42
  16. 37
  17. 25
  18. 44
  19. 6
  20. 10
  21. 50
  22. 7
  23. 17
  24. 22
  25. 37
  26. 27
  27. 21
  28. 5
  29. 43
  30. 18
  31. 38
  32. 13
  33. 30
  34. 10
  35. 36
  36. 34
  37. 27
  38. 25
  39. 16
  40. 27

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