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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 73 · 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. 1.1005 − 993 =
  2. 2.51 − 42 =
  3. 3.526 − 483 =
  4. 4.90 − 66 =
  5. 5.1029 − 992 =
  6. 6.1013 − 978 =
  7. 7.99 − 66 =
  8. 8.1021 − 997 =
  9. 9.314 − 298 =
  10. 10.65 − 30 =
  11. 11.121 − 79 =
  12. 12.518 − 495 =
  13. 13.85 − 62 =
  14. 14.106 − 85 =
  15. 15.103 − 74 =
  16. 16.506 − 477 =
  17. 17.1023 − 995 =
  18. 18.202 − 198 =
  19. 19.81 − 76 =
  20. 20.73 − 44 =
  21. 21.507 − 492 =
  22. 22.521 − 487 =
  23. 23.107 − 68 =
  24. 24.1017 − 990 =
  25. 25.1009 − 978 =
  26. 26.128 − 89 =
  27. 27.105 − 56 =
  28. 28.1025 − 978 =
  29. 29.1003 − 990 =
  30. 30.502 − 478 =
  31. 31.301 − 276 =
  32. 32.303 − 291 =
  33. 33.212 − 176 =
  34. 34.97 − 70 =
  35. 35.110 − 71 =
  36. 36.509 − 486 =
  37. 37.230 − 180 =
  38. 38.514 − 484 =
  39. 39.326 − 294 =
  40. 40.1017 − 985 =

Answer key

  1. 12
  2. 9
  3. 43
  4. 24
  5. 37
  6. 35
  7. 33
  8. 24
  9. 16
  10. 35
  11. 42
  12. 23
  13. 23
  14. 21
  15. 29
  16. 29
  17. 28
  18. 4
  19. 5
  20. 29
  21. 15
  22. 34
  23. 39
  24. 27
  25. 31
  26. 39
  27. 49
  28. 47
  29. 13
  30. 24
  31. 25
  32. 12
  33. 36
  34. 27
  35. 39
  36. 23
  37. 50
  38. 30
  39. 32
  40. 32

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