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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 826 · 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. 1.54 − 44 =
  2. 2.1014 − 998 =
  3. 3.1002 − 995 =
  4. 4.89 − 74 =
  5. 5.1003 − 985 =
  6. 6.127 − 87 =
  7. 7.56 − 41 =
  8. 8.97 − 67 =
  9. 9.104 − 88 =
  10. 10.1005 − 978 =
  11. 11.93 − 74 =
  12. 12.325 − 283 =
  13. 13.1015 − 995 =
  14. 14.217 − 185 =
  15. 15.203 − 184 =
  16. 16.528 − 475 =
  17. 17.104 − 94 =
  18. 18.116 − 95 =
  19. 19.509 − 492 =
  20. 20.1021 − 985 =
  21. 21.506 − 482 =
  22. 22.220 − 178 =
  23. 23.1011 − 987 =
  24. 24.303 − 283 =
  25. 25.72 − 44 =
  26. 26.109 − 77 =
  27. 27.507 − 493 =
  28. 28.52 − 44 =
  29. 29.306 − 289 =
  30. 30.84 − 78 =
  31. 31.304 − 281 =
  32. 32.305 − 276 =
  33. 33.108 − 95 =
  34. 34.87 − 69 =
  35. 35.68 − 47 =
  36. 36.210 − 185 =
  37. 37.81 − 58 =
  38. 38.509 − 481 =
  39. 39.103 − 96 =
  40. 40.321 − 293 =

Answer key

  1. 10
  2. 16
  3. 7
  4. 15
  5. 18
  6. 40
  7. 15
  8. 30
  9. 16
  10. 27
  11. 19
  12. 42
  13. 20
  14. 32
  15. 19
  16. 53
  17. 10
  18. 21
  19. 17
  20. 36
  21. 24
  22. 42
  23. 24
  24. 20
  25. 28
  26. 32
  27. 14
  28. 8
  29. 17
  30. 6
  31. 23
  32. 29
  33. 13
  34. 18
  35. 21
  36. 25
  37. 23
  38. 28
  39. 7
  40. 28

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