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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 156 · 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. 1.84 − 73 =
  2. 2.316 − 276 =
  3. 3.508 − 480 =
  4. 4.1012 − 990 =
  5. 5.112 − 76 =
  6. 6.88 − 63 =
  7. 7.308 − 283 =
  8. 8.303 − 298 =
  9. 9.57 − 39 =
  10. 10.89 − 67 =
  11. 11.115 − 95 =
  12. 12.94 − 55 =
  13. 13.78 − 37 =
  14. 14.72 − 40 =
  15. 15.305 − 285 =
  16. 16.101 − 62 =
  17. 17.226 − 184 =
  18. 18.116 − 76 =
  19. 19.213 − 187 =
  20. 20.77 − 46 =
  21. 21.68 − 25 =
  22. 22.68 − 45 =
  23. 23.501 − 481 =
  24. 24.119 − 92 =
  25. 25.501 − 495 =
  26. 26.323 − 296 =
  27. 27.73 − 42 =
  28. 28.312 − 288 =
  29. 29.107 − 81 =
  30. 30.91 − 55 =
  31. 31.66 − 28 =
  32. 32.1004 − 992 =
  33. 33.1011 − 988 =
  34. 34.83 − 76 =
  35. 35.1012 − 984 =
  36. 36.79 − 37 =
  37. 37.1023 − 983 =
  38. 38.93 − 72 =
  39. 39.1003 − 976 =
  40. 40.515 − 492 =

Answer key

  1. 11
  2. 40
  3. 28
  4. 22
  5. 36
  6. 25
  7. 25
  8. 5
  9. 18
  10. 22
  11. 20
  12. 39
  13. 41
  14. 32
  15. 20
  16. 39
  17. 42
  18. 40
  19. 26
  20. 31
  21. 43
  22. 23
  23. 20
  24. 27
  25. 6
  26. 27
  27. 31
  28. 24
  29. 26
  30. 36
  31. 38
  32. 12
  33. 23
  34. 7
  35. 28
  36. 42
  37. 40
  38. 21
  39. 27
  40. 23

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