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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 947 · 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. 1.303 − 294 =
  2. 2.1017 − 989 =
  3. 3.107 − 96 =
  4. 4.303 − 277 =
  5. 5.510 − 485 =
  6. 6.88 − 61 =
  7. 7.310 − 295 =
  8. 8.77 − 46 =
  9. 9.71 − 34 =
  10. 10.524 − 491 =
  11. 11.124 − 83 =
  12. 12.315 − 295 =
  13. 13.60 − 46 =
  14. 14.97 − 78 =
  15. 15.122 − 89 =
  16. 16.519 − 490 =
  17. 17.311 − 278 =
  18. 18.1007 − 998 =
  19. 19.109 − 60 =
  20. 20.510 − 486 =
  21. 21.223 − 195 =
  22. 22.304 − 285 =
  23. 23.71 − 42 =
  24. 24.100 − 65 =
  25. 25.309 − 293 =
  26. 26.89 − 74 =
  27. 27.114 − 84 =
  28. 28.501 − 495 =
  29. 29.121 − 97 =
  30. 30.1024 − 996 =
  31. 31.222 − 183 =
  32. 32.523 − 477 =
  33. 33.529 − 497 =
  34. 34.83 − 67 =
  35. 35.315 − 285 =
  36. 36.515 − 477 =
  37. 37.220 − 182 =
  38. 38.81 − 65 =
  39. 39.204 − 194 =
  40. 40.101 − 73 =

Answer key

  1. 9
  2. 28
  3. 11
  4. 26
  5. 25
  6. 27
  7. 15
  8. 31
  9. 37
  10. 33
  11. 41
  12. 20
  13. 14
  14. 19
  15. 33
  16. 29
  17. 33
  18. 9
  19. 49
  20. 24
  21. 28
  22. 19
  23. 29
  24. 35
  25. 16
  26. 15
  27. 30
  28. 6
  29. 24
  30. 28
  31. 39
  32. 46
  33. 32
  34. 16
  35. 30
  36. 38
  37. 38
  38. 16
  39. 10
  40. 28

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