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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 119 · 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. 1.128 − 81 =
  2. 2.328 − 293 =
  3. 3.304 − 285 =
  4. 4.100 − 58 =
  5. 5.94 − 72 =
  6. 6.311 − 276 =
  7. 7.508 − 479 =
  8. 8.504 − 492 =
  9. 9.212 − 188 =
  10. 10.302 − 294 =
  11. 11.99 − 73 =
  12. 12.73 − 37 =
  13. 13.120 − 93 =
  14. 14.109 − 55 =
  15. 15.68 − 30 =
  16. 16.130 − 82 =
  17. 17.321 − 275 =
  18. 18.78 − 32 =
  19. 19.73 − 47 =
  20. 20.505 − 496 =
  21. 21.205 − 177 =
  22. 22.307 − 285 =
  23. 23.521 − 490 =
  24. 24.525 − 494 =
  25. 25.203 − 188 =
  26. 26.1026 − 992 =
  27. 27.68 − 38 =
  28. 28.71 − 25 =
  29. 29.102 − 97 =
  30. 30.86 − 71 =
  31. 31.52 − 26 =
  32. 32.1030 − 993 =
  33. 33.118 − 80 =
  34. 34.109 − 79 =
  35. 35.224 − 193 =
  36. 36.504 − 490 =
  37. 37.329 − 291 =
  38. 38.105 − 88 =
  39. 39.1009 − 981 =
  40. 40.1011 − 990 =

Answer key

  1. 47
  2. 35
  3. 19
  4. 42
  5. 22
  6. 35
  7. 29
  8. 12
  9. 24
  10. 8
  11. 26
  12. 36
  13. 27
  14. 54
  15. 38
  16. 48
  17. 46
  18. 46
  19. 26
  20. 9
  21. 28
  22. 22
  23. 31
  24. 31
  25. 15
  26. 34
  27. 30
  28. 46
  29. 5
  30. 15
  31. 26
  32. 37
  33. 38
  34. 30
  35. 31
  36. 14
  37. 38
  38. 17
  39. 28
  40. 21

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