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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 429 · 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. 1.119 − 83 =
  2. 2.115 − 85 =
  3. 3.522 − 494 =
  4. 4.115 − 80 =
  5. 5.313 − 279 =
  6. 6.1002 − 998 =
  7. 7.314 − 277 =
  8. 8.305 − 292 =
  9. 9.205 − 192 =
  10. 10.71 − 37 =
  11. 11.129 − 97 =
  12. 12.110 − 70 =
  13. 13.84 − 71 =
  14. 14.104 − 98 =
  15. 15.506 − 477 =
  16. 16.224 − 188 =
  17. 17.515 − 492 =
  18. 18.219 − 193 =
  19. 19.1005 − 990 =
  20. 20.522 − 483 =
  21. 21.84 − 69 =
  22. 22.206 − 177 =
  23. 23.222 − 194 =
  24. 24.309 − 286 =
  25. 25.53 − 27 =
  26. 26.82 − 57 =
  27. 27.78 − 28 =
  28. 28.111 − 78 =
  29. 29.529 − 483 =
  30. 30.314 − 296 =
  31. 31.1013 − 987 =
  32. 32.315 − 281 =
  33. 33.1019 − 978 =
  34. 34.220 − 186 =
  35. 35.74 − 33 =
  36. 36.325 − 298 =
  37. 37.101 − 97 =
  38. 38.92 − 75 =
  39. 39.73 − 27 =
  40. 40.216 − 177 =

Answer key

  1. 36
  2. 30
  3. 28
  4. 35
  5. 34
  6. 4
  7. 37
  8. 13
  9. 13
  10. 34
  11. 32
  12. 40
  13. 13
  14. 6
  15. 29
  16. 36
  17. 23
  18. 26
  19. 15
  20. 39
  21. 15
  22. 29
  23. 28
  24. 23
  25. 26
  26. 25
  27. 50
  28. 33
  29. 46
  30. 18
  31. 26
  32. 34
  33. 41
  34. 34
  35. 41
  36. 27
  37. 4
  38. 17
  39. 46
  40. 39

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