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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 648 · 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. 1.1011 − 993 =
  2. 2.221 − 195 =
  3. 3.81 − 76 =
  4. 4.513 − 496 =
  5. 5.524 − 493 =
  6. 6.71 − 40 =
  7. 7.82 − 73 =
  8. 8.203 − 189 =
  9. 9.516 − 498 =
  10. 10.503 − 482 =
  11. 11.108 − 68 =
  12. 12.507 − 475 =
  13. 13.78 − 31 =
  14. 14.523 − 492 =
  15. 15.75 − 28 =
  16. 16.503 − 491 =
  17. 17.225 − 194 =
  18. 18.113 − 98 =
  19. 19.103 − 58 =
  20. 20.66 − 33 =
  21. 21.121 − 85 =
  22. 22.305 − 282 =
  23. 23.90 − 77 =
  24. 24.1009 − 985 =
  25. 25.525 − 497 =
  26. 26.62 − 45 =
  27. 27.504 − 490 =
  28. 28.503 − 481 =
  29. 29.519 − 494 =
  30. 30.1009 − 982 =
  31. 31.66 − 37 =
  32. 32.75 − 47 =
  33. 33.102 − 83 =
  34. 34.74 − 29 =
  35. 35.70 − 38 =
  36. 36.311 − 275 =
  37. 37.316 − 294 =
  38. 38.68 − 25 =
  39. 39.205 − 190 =
  40. 40.1014 − 984 =

Answer key

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

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