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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 21 · 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. 1.74 − 36 =
  2. 2.529 − 480 =
  3. 3.304 − 297 =
  4. 4.306 − 281 =
  5. 5.307 − 281 =
  6. 6.108 − 86 =
  7. 7.315 − 293 =
  8. 8.503 − 498 =
  9. 9.73 − 28 =
  10. 10.216 − 189 =
  11. 11.89 − 72 =
  12. 12.317 − 295 =
  13. 13.207 − 195 =
  14. 14.87 − 77 =
  15. 15.303 − 286 =
  16. 16.107 − 55 =
  17. 17.73 − 40 =
  18. 18.103 − 72 =
  19. 19.60 − 26 =
  20. 20.57 − 33 =
  21. 21.118 − 90 =
  22. 22.62 − 30 =
  23. 23.66 − 38 =
  24. 24.213 − 197 =
  25. 25.92 − 72 =
  26. 26.527 − 491 =
  27. 27.323 − 286 =
  28. 28.75 − 39 =
  29. 29.501 − 477 =
  30. 30.329 − 288 =
  31. 31.103 − 78 =
  32. 32.76 − 43 =
  33. 33.1002 − 992 =
  34. 34.208 − 193 =
  35. 35.1004 − 992 =
  36. 36.100 − 71 =
  37. 37.1005 − 988 =
  38. 38.69 − 45 =
  39. 39.53 − 33 =
  40. 40.1005 − 986 =

Answer key

  1. 38
  2. 49
  3. 7
  4. 25
  5. 26
  6. 22
  7. 22
  8. 5
  9. 45
  10. 27
  11. 17
  12. 22
  13. 12
  14. 10
  15. 17
  16. 52
  17. 33
  18. 31
  19. 34
  20. 24
  21. 28
  22. 32
  23. 28
  24. 16
  25. 20
  26. 36
  27. 37
  28. 36
  29. 24
  30. 41
  31. 25
  32. 33
  33. 10
  34. 15
  35. 12
  36. 29
  37. 17
  38. 24
  39. 20
  40. 19

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