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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 762 · 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. 1.84 − 55 =
  2. 2.322 − 296 =
  3. 3.68 − 36 =
  4. 4.52 − 35 =
  5. 5.1011 − 983 =
  6. 6.97 − 61 =
  7. 7.325 − 291 =
  8. 8.228 − 192 =
  9. 9.202 − 194 =
  10. 10.110 − 70 =
  11. 11.508 − 480 =
  12. 12.105 − 92 =
  13. 13.63 − 40 =
  14. 14.330 − 280 =
  15. 15.75 − 42 =
  16. 16.115 − 87 =
  17. 17.527 − 496 =
  18. 18.62 − 26 =
  19. 19.502 − 479 =
  20. 20.224 − 194 =
  21. 21.529 − 484 =
  22. 22.502 − 497 =
  23. 23.51 − 43 =
  24. 24.98 − 59 =
  25. 25.520 − 492 =
  26. 26.104 − 81 =
  27. 27.63 − 27 =
  28. 28.115 − 90 =
  29. 29.121 − 94 =
  30. 30.125 − 94 =
  31. 31.214 − 198 =
  32. 32.309 − 285 =
  33. 33.63 − 45 =
  34. 34.311 − 275 =
  35. 35.303 − 293 =
  36. 36.61 − 40 =
  37. 37.118 − 83 =
  38. 38.1009 − 995 =
  39. 39.120 − 78 =
  40. 40.87 − 72 =

Answer key

  1. 29
  2. 26
  3. 32
  4. 17
  5. 28
  6. 36
  7. 34
  8. 36
  9. 8
  10. 40
  11. 28
  12. 13
  13. 23
  14. 50
  15. 33
  16. 28
  17. 31
  18. 36
  19. 23
  20. 30
  21. 45
  22. 5
  23. 8
  24. 39
  25. 28
  26. 23
  27. 36
  28. 25
  29. 27
  30. 31
  31. 16
  32. 24
  33. 18
  34. 36
  35. 10
  36. 21
  37. 35
  38. 14
  39. 42
  40. 15

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