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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 350 · 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. 1.52 − 44 =
  2. 2.306 − 294 =
  3. 3.1013 − 993 =
  4. 4.73 − 42 =
  5. 5.115 − 86 =
  6. 6.103 − 85 =
  7. 7.207 − 194 =
  8. 8.70 − 35 =
  9. 9.1030 − 977 =
  10. 10.218 − 185 =
  11. 11.61 − 38 =
  12. 12.85 − 68 =
  13. 13.101 − 72 =
  14. 14.313 − 275 =
  15. 15.516 − 484 =
  16. 16.130 − 90 =
  17. 17.115 − 92 =
  18. 18.521 − 478 =
  19. 19.318 − 289 =
  20. 20.116 − 85 =
  21. 21.116 − 92 =
  22. 22.304 − 275 =
  23. 23.104 − 92 =
  24. 24.71 − 34 =
  25. 25.79 − 44 =
  26. 26.301 − 288 =
  27. 27.103 − 59 =
  28. 28.76 − 27 =
  29. 29.53 − 41 =
  30. 30.507 − 476 =
  31. 31.66 − 27 =
  32. 32.64 − 28 =
  33. 33.86 − 77 =
  34. 34.86 − 67 =
  35. 35.113 − 76 =
  36. 36.1030 − 998 =
  37. 37.62 − 47 =
  38. 38.81 − 60 =
  39. 39.221 − 189 =
  40. 40.523 − 487 =

Answer key

  1. 8
  2. 12
  3. 20
  4. 31
  5. 29
  6. 18
  7. 13
  8. 35
  9. 53
  10. 33
  11. 23
  12. 17
  13. 29
  14. 38
  15. 32
  16. 40
  17. 23
  18. 43
  19. 29
  20. 31
  21. 24
  22. 29
  23. 12
  24. 37
  25. 35
  26. 13
  27. 44
  28. 49
  29. 12
  30. 31
  31. 39
  32. 36
  33. 9
  34. 19
  35. 37
  36. 32
  37. 15
  38. 21
  39. 32
  40. 36

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