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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 95 · 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. 1.106 − 89 =
  2. 2.75 − 39 =
  3. 3.70 − 41 =
  4. 4.321 − 280 =
  5. 5.224 − 180 =
  6. 6.1008 − 984 =
  7. 7.503 − 496 =
  8. 8.319 − 289 =
  9. 9.1007 − 980 =
  10. 10.75 − 28 =
  11. 11.73 − 38 =
  12. 12.114 − 86 =
  13. 13.319 − 276 =
  14. 14.98 − 76 =
  15. 15.228 − 194 =
  16. 16.68 − 38 =
  17. 17.121 − 79 =
  18. 18.506 − 498 =
  19. 19.325 − 298 =
  20. 20.310 − 279 =
  21. 21.86 − 76 =
  22. 22.221 − 196 =
  23. 23.54 − 44 =
  24. 24.107 − 90 =
  25. 25.205 − 197 =
  26. 26.525 − 484 =
  27. 27.329 − 283 =
  28. 28.207 − 187 =
  29. 29.115 − 90 =
  30. 30.214 − 197 =
  31. 31.510 − 490 =
  32. 32.94 − 72 =
  33. 33.65 − 34 =
  34. 34.112 − 88 =
  35. 35.1020 − 981 =
  36. 36.505 − 496 =
  37. 37.503 − 486 =
  38. 38.1014 − 997 =
  39. 39.102 − 95 =
  40. 40.511 − 491 =

Answer key

  1. 17
  2. 36
  3. 29
  4. 41
  5. 44
  6. 24
  7. 7
  8. 30
  9. 27
  10. 47
  11. 35
  12. 28
  13. 43
  14. 22
  15. 34
  16. 30
  17. 42
  18. 8
  19. 27
  20. 31
  21. 10
  22. 25
  23. 10
  24. 17
  25. 8
  26. 41
  27. 46
  28. 20
  29. 25
  30. 17
  31. 20
  32. 22
  33. 31
  34. 24
  35. 39
  36. 9
  37. 17
  38. 17
  39. 7
  40. 20

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