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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 749 · 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. 1.106 − 89 =
  2. 2.91 − 74 =
  3. 3.73 − 42 =
  4. 4.78 − 46 =
  5. 5.82 − 77 =
  6. 6.205 − 197 =
  7. 7.85 − 69 =
  8. 8.1021 − 979 =
  9. 9.310 − 285 =
  10. 10.80 − 33 =
  11. 11.1020 − 998 =
  12. 12.109 − 79 =
  13. 13.516 − 493 =
  14. 14.208 − 185 =
  15. 15.217 − 191 =
  16. 16.125 − 92 =
  17. 17.326 − 276 =
  18. 18.85 − 70 =
  19. 19.1022 − 994 =
  20. 20.105 − 97 =
  21. 21.1012 − 993 =
  22. 22.513 − 478 =
  23. 23.82 − 60 =
  24. 24.201 − 190 =
  25. 25.222 − 186 =
  26. 26.73 − 37 =
  27. 27.310 − 294 =
  28. 28.105 − 93 =
  29. 29.327 − 281 =
  30. 30.512 − 477 =
  31. 31.227 − 188 =
  32. 32.64 − 27 =
  33. 33.318 − 298 =
  34. 34.328 − 281 =
  35. 35.519 − 496 =
  36. 36.518 − 489 =
  37. 37.114 − 84 =
  38. 38.307 − 295 =
  39. 39.1008 − 997 =
  40. 40.326 − 289 =

Answer key

  1. 17
  2. 17
  3. 31
  4. 32
  5. 5
  6. 8
  7. 16
  8. 42
  9. 25
  10. 47
  11. 22
  12. 30
  13. 23
  14. 23
  15. 26
  16. 33
  17. 50
  18. 15
  19. 28
  20. 8
  21. 19
  22. 35
  23. 22
  24. 11
  25. 36
  26. 36
  27. 16
  28. 12
  29. 46
  30. 35
  31. 39
  32. 37
  33. 20
  34. 47
  35. 23
  36. 29
  37. 30
  38. 12
  39. 11
  40. 37

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