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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 108 · 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. 1.323 − 279 =
  2. 2.1003 − 980 =
  3. 3.530 − 484 =
  4. 4.1030 − 978 =
  5. 5.1004 − 998 =
  6. 6.217 − 179 =
  7. 7.212 − 189 =
  8. 8.1005 − 991 =
  9. 9.108 − 74 =
  10. 10.92 − 68 =
  11. 11.1020 − 978 =
  12. 12.61 − 39 =
  13. 13.526 − 492 =
  14. 14.518 − 478 =
  15. 15.521 − 496 =
  16. 16.96 − 72 =
  17. 17.56 − 25 =
  18. 18.119 − 88 =
  19. 19.112 − 96 =
  20. 20.105 − 62 =
  21. 21.56 − 45 =
  22. 22.77 − 32 =
  23. 23.75 − 43 =
  24. 24.508 − 480 =
  25. 25.79 − 41 =
  26. 26.63 − 44 =
  27. 27.1004 − 976 =
  28. 28.1008 − 987 =
  29. 29.97 − 75 =
  30. 30.525 − 478 =
  31. 31.226 − 182 =
  32. 32.1009 − 982 =
  33. 33.325 − 292 =
  34. 34.87 − 69 =
  35. 35.58 − 48 =
  36. 36.301 − 293 =
  37. 37.507 − 483 =
  38. 38.1026 − 991 =
  39. 39.507 − 477 =
  40. 40.102 − 66 =

Answer key

  1. 44
  2. 23
  3. 46
  4. 52
  5. 6
  6. 38
  7. 23
  8. 14
  9. 34
  10. 24
  11. 42
  12. 22
  13. 34
  14. 40
  15. 25
  16. 24
  17. 31
  18. 31
  19. 16
  20. 43
  21. 11
  22. 45
  23. 32
  24. 28
  25. 38
  26. 19
  27. 28
  28. 21
  29. 22
  30. 47
  31. 44
  32. 27
  33. 33
  34. 18
  35. 10
  36. 8
  37. 24
  38. 35
  39. 30
  40. 36

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