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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 571 · 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. 1.312 − 295 =
  2. 2.122 − 83 =
  3. 3.93 − 73 =
  4. 4.513 − 475 =
  5. 5.308 − 280 =
  6. 6.309 − 294 =
  7. 7.60 − 47 =
  8. 8.303 − 298 =
  9. 9.59 − 29 =
  10. 10.82 − 67 =
  11. 11.109 − 93 =
  12. 12.75 − 42 =
  13. 13.68 − 31 =
  14. 14.100 − 70 =
  15. 15.517 − 475 =
  16. 16.206 − 178 =
  17. 17.106 − 69 =
  18. 18.205 − 196 =
  19. 19.218 − 177 =
  20. 20.85 − 77 =
  21. 21.79 − 29 =
  22. 22.91 − 77 =
  23. 23.83 − 69 =
  24. 24.228 − 187 =
  25. 25.507 − 493 =
  26. 26.502 − 484 =
  27. 27.219 − 187 =
  28. 28.103 − 93 =
  29. 29.1024 − 977 =
  30. 30.66 − 37 =
  31. 31.526 − 485 =
  32. 32.223 − 181 =
  33. 33.516 − 485 =
  34. 34.230 − 180 =
  35. 35.120 − 93 =
  36. 36.515 − 487 =
  37. 37.104 − 75 =
  38. 38.58 − 33 =
  39. 39.68 − 34 =
  40. 40.83 − 73 =

Answer key

  1. 17
  2. 39
  3. 20
  4. 38
  5. 28
  6. 15
  7. 13
  8. 5
  9. 30
  10. 15
  11. 16
  12. 33
  13. 37
  14. 30
  15. 42
  16. 28
  17. 37
  18. 9
  19. 41
  20. 8
  21. 50
  22. 14
  23. 14
  24. 41
  25. 14
  26. 18
  27. 32
  28. 10
  29. 47
  30. 29
  31. 41
  32. 42
  33. 31
  34. 50
  35. 27
  36. 28
  37. 29
  38. 25
  39. 34
  40. 10

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