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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 409 · 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. 1.508 − 483 =
  2. 2.502 − 475 =
  3. 3.80 − 37 =
  4. 4.1022 − 978 =
  5. 5.91 − 73 =
  6. 6.220 − 178 =
  7. 7.79 − 28 =
  8. 8.81 − 78 =
  9. 9.86 − 71 =
  10. 10.525 − 479 =
  11. 11.130 − 88 =
  12. 12.1013 − 982 =
  13. 13.128 − 78 =
  14. 14.127 − 86 =
  15. 15.515 − 476 =
  16. 16.64 − 26 =
  17. 17.1006 − 995 =
  18. 18.123 − 84 =
  19. 19.86 − 75 =
  20. 20.1029 − 981 =
  21. 21.61 − 47 =
  22. 22.121 − 80 =
  23. 23.1018 − 995 =
  24. 24.115 − 92 =
  25. 25.124 − 96 =
  26. 26.512 − 477 =
  27. 27.1004 − 997 =
  28. 28.1022 − 989 =
  29. 29.128 − 86 =
  30. 30.502 − 489 =
  31. 31.308 − 294 =
  32. 32.106 − 93 =
  33. 33.96 − 67 =
  34. 34.103 − 63 =
  35. 35.73 − 42 =
  36. 36.68 − 41 =
  37. 37.86 − 61 =
  38. 38.302 − 282 =
  39. 39.329 − 295 =
  40. 40.1027 − 998 =

Answer key

  1. 25
  2. 27
  3. 43
  4. 44
  5. 18
  6. 42
  7. 51
  8. 3
  9. 15
  10. 46
  11. 42
  12. 31
  13. 50
  14. 41
  15. 39
  16. 38
  17. 11
  18. 39
  19. 11
  20. 48
  21. 14
  22. 41
  23. 23
  24. 23
  25. 28
  26. 35
  27. 7
  28. 33
  29. 42
  30. 13
  31. 14
  32. 13
  33. 29
  34. 40
  35. 31
  36. 27
  37. 25
  38. 20
  39. 34
  40. 29

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