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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 548 · 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. 1.98 − 74 =
  2. 2.130 − 98 =
  3. 3.1016 − 993 =
  4. 4.63 − 29 =
  5. 5.85 − 68 =
  6. 6.1013 − 998 =
  7. 7.516 − 490 =
  8. 8.513 − 488 =
  9. 9.81 − 76 =
  10. 10.222 − 180 =
  11. 11.64 − 39 =
  12. 12.1005 − 996 =
  13. 13.92 − 59 =
  14. 14.302 − 288 =
  15. 15.1009 − 986 =
  16. 16.56 − 26 =
  17. 17.328 − 298 =
  18. 18.115 − 89 =
  19. 19.63 − 44 =
  20. 20.106 − 98 =
  21. 21.1008 − 987 =
  22. 22.66 − 42 =
  23. 23.507 − 482 =
  24. 24.217 − 176 =
  25. 25.80 − 43 =
  26. 26.511 − 493 =
  27. 27.315 − 288 =
  28. 28.1003 − 984 =
  29. 29.1019 − 984 =
  30. 30.104 − 83 =
  31. 31.230 − 198 =
  32. 32.522 − 491 =
  33. 33.212 − 194 =
  34. 34.213 − 186 =
  35. 35.209 − 189 =
  36. 36.1020 − 996 =
  37. 37.504 − 496 =
  38. 38.102 − 77 =
  39. 39.79 − 25 =
  40. 40.501 − 476 =

Answer key

  1. 24
  2. 32
  3. 23
  4. 34
  5. 17
  6. 15
  7. 26
  8. 25
  9. 5
  10. 42
  11. 25
  12. 9
  13. 33
  14. 14
  15. 23
  16. 30
  17. 30
  18. 26
  19. 19
  20. 8
  21. 21
  22. 24
  23. 25
  24. 41
  25. 37
  26. 18
  27. 27
  28. 19
  29. 35
  30. 21
  31. 32
  32. 31
  33. 18
  34. 27
  35. 20
  36. 24
  37. 8
  38. 25
  39. 54
  40. 25

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