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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 564 · 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. 1.213 − 180 =
  2. 2.1026 − 977 =
  3. 3.85 − 55 =
  4. 4.522 − 478 =
  5. 5.87 − 77 =
  6. 6.106 − 73 =
  7. 7.505 − 498 =
  8. 8.88 − 70 =
  9. 9.308 − 296 =
  10. 10.115 − 77 =
  11. 11.516 − 491 =
  12. 12.129 − 78 =
  13. 13.524 − 495 =
  14. 14.315 − 280 =
  15. 15.1030 − 980 =
  16. 16.1003 − 988 =
  17. 17.511 − 483 =
  18. 18.518 − 479 =
  19. 19.519 − 483 =
  20. 20.106 − 85 =
  21. 21.1010 − 975 =
  22. 22.1007 − 997 =
  23. 23.96 − 74 =
  24. 24.519 − 476 =
  25. 25.504 − 476 =
  26. 26.64 − 33 =
  27. 27.127 − 88 =
  28. 28.86 − 66 =
  29. 29.308 − 297 =
  30. 30.229 − 192 =
  31. 31.1022 − 989 =
  32. 32.504 − 495 =
  33. 33.105 − 96 =
  34. 34.520 − 484 =
  35. 35.1009 − 993 =
  36. 36.327 − 295 =
  37. 37.217 − 184 =
  38. 38.517 − 486 =
  39. 39.301 − 276 =
  40. 40.209 − 188 =

Answer key

  1. 33
  2. 49
  3. 30
  4. 44
  5. 10
  6. 33
  7. 7
  8. 18
  9. 12
  10. 38
  11. 25
  12. 51
  13. 29
  14. 35
  15. 50
  16. 15
  17. 28
  18. 39
  19. 36
  20. 21
  21. 35
  22. 10
  23. 22
  24. 43
  25. 28
  26. 31
  27. 39
  28. 20
  29. 11
  30. 37
  31. 33
  32. 9
  33. 9
  34. 36
  35. 16
  36. 32
  37. 33
  38. 31
  39. 25
  40. 21

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