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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 930 · 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. 1.313 − 297 =
  2. 2.314 − 277 =
  3. 3.55 − 42 =
  4. 4.105 − 97 =
  5. 5.108 − 87 =
  6. 6.102 − 57 =
  7. 7.1023 − 978 =
  8. 8.51 − 37 =
  9. 9.313 − 284 =
  10. 10.218 − 194 =
  11. 11.218 − 184 =
  12. 12.1028 − 990 =
  13. 13.1019 − 987 =
  14. 14.317 − 295 =
  15. 15.1013 − 992 =
  16. 16.220 − 175 =
  17. 17.516 − 486 =
  18. 18.88 − 64 =
  19. 19.108 − 84 =
  20. 20.1005 − 983 =
  21. 21.220 − 190 =
  22. 22.224 − 182 =
  23. 23.95 − 73 =
  24. 24.60 − 38 =
  25. 25.57 − 28 =
  26. 26.99 − 60 =
  27. 27.103 − 57 =
  28. 28.1003 − 978 =
  29. 29.103 − 88 =
  30. 30.520 − 484 =
  31. 31.121 − 81 =
  32. 32.526 − 475 =
  33. 33.227 − 179 =
  34. 34.506 − 494 =
  35. 35.201 − 194 =
  36. 36.514 − 487 =
  37. 37.105 − 94 =
  38. 38.220 − 188 =
  39. 39.305 − 293 =
  40. 40.78 − 34 =

Answer key

  1. 16
  2. 37
  3. 13
  4. 8
  5. 21
  6. 45
  7. 45
  8. 14
  9. 29
  10. 24
  11. 34
  12. 38
  13. 32
  14. 22
  15. 21
  16. 45
  17. 30
  18. 24
  19. 24
  20. 22
  21. 30
  22. 42
  23. 22
  24. 22
  25. 29
  26. 39
  27. 46
  28. 25
  29. 15
  30. 36
  31. 40
  32. 51
  33. 48
  34. 12
  35. 7
  36. 27
  37. 11
  38. 32
  39. 12
  40. 44

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