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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 315 · 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. 1.100 − 67 =
  2. 2.325 − 289 =
  3. 3.58 − 34 =
  4. 4.128 − 75 =
  5. 5.127 − 84 =
  6. 6.71 − 26 =
  7. 7.216 − 189 =
  8. 8.207 − 192 =
  9. 9.1003 − 997 =
  10. 10.85 − 71 =
  11. 11.1017 − 992 =
  12. 12.1027 − 992 =
  13. 13.103 − 73 =
  14. 14.513 − 481 =
  15. 15.313 − 279 =
  16. 16.325 − 276 =
  17. 17.508 − 495 =
  18. 18.523 − 497 =
  19. 19.105 − 66 =
  20. 20.89 − 75 =
  21. 21.312 − 297 =
  22. 22.105 − 97 =
  23. 23.87 − 74 =
  24. 24.80 − 28 =
  25. 25.223 − 185 =
  26. 26.1016 − 977 =
  27. 27.222 − 183 =
  28. 28.1018 − 980 =
  29. 29.510 − 476 =
  30. 30.101 − 71 =
  31. 31.1011 − 998 =
  32. 32.78 − 48 =
  33. 33.203 − 178 =
  34. 34.512 − 498 =
  35. 35.505 − 475 =
  36. 36.99 − 56 =
  37. 37.62 − 37 =
  38. 38.512 − 483 =
  39. 39.1006 − 978 =
  40. 40.229 − 182 =

Answer key

  1. 33
  2. 36
  3. 24
  4. 53
  5. 43
  6. 45
  7. 27
  8. 15
  9. 6
  10. 14
  11. 25
  12. 35
  13. 30
  14. 32
  15. 34
  16. 49
  17. 13
  18. 26
  19. 39
  20. 14
  21. 15
  22. 8
  23. 13
  24. 52
  25. 38
  26. 39
  27. 39
  28. 38
  29. 34
  30. 30
  31. 13
  32. 30
  33. 25
  34. 14
  35. 30
  36. 43
  37. 25
  38. 29
  39. 28
  40. 47

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