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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 460 · 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. 1.1002 − 994 =
  2. 2.529 − 479 =
  3. 3.111 − 83 =
  4. 4.125 − 94 =
  5. 5.201 − 188 =
  6. 6.124 − 90 =
  7. 7.105 − 93 =
  8. 8.524 − 489 =
  9. 9.108 − 88 =
  10. 10.1003 − 977 =
  11. 11.99 − 72 =
  12. 12.505 − 494 =
  13. 13.510 − 480 =
  14. 14.57 − 40 =
  15. 15.527 − 484 =
  16. 16.112 − 86 =
  17. 17.84 − 71 =
  18. 18.203 − 182 =
  19. 19.102 − 72 =
  20. 20.103 − 63 =
  21. 21.1022 − 978 =
  22. 22.326 − 289 =
  23. 23.507 − 490 =
  24. 24.225 − 181 =
  25. 25.208 − 197 =
  26. 26.126 − 79 =
  27. 27.317 − 279 =
  28. 28.95 − 75 =
  29. 29.307 − 275 =
  30. 30.511 − 495 =
  31. 31.226 − 179 =
  32. 32.106 − 79 =
  33. 33.1019 − 985 =
  34. 34.212 − 197 =
  35. 35.322 − 294 =
  36. 36.530 − 486 =
  37. 37.330 − 292 =
  38. 38.85 − 57 =
  39. 39.303 − 279 =
  40. 40.109 − 87 =

Answer key

  1. 8
  2. 50
  3. 28
  4. 31
  5. 13
  6. 34
  7. 12
  8. 35
  9. 20
  10. 26
  11. 27
  12. 11
  13. 30
  14. 17
  15. 43
  16. 26
  17. 13
  18. 21
  19. 30
  20. 40
  21. 44
  22. 37
  23. 17
  24. 44
  25. 11
  26. 47
  27. 38
  28. 20
  29. 32
  30. 16
  31. 47
  32. 27
  33. 34
  34. 15
  35. 28
  36. 44
  37. 38
  38. 28
  39. 24
  40. 22

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