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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 860 · 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. 1.511 − 486 =
  2. 2.109 − 64 =
  3. 3.316 − 289 =
  4. 4.67 − 31 =
  5. 5.74 − 34 =
  6. 6.302 − 293 =
  7. 7.318 − 296 =
  8. 8.52 − 44 =
  9. 9.103 − 92 =
  10. 10.218 − 192 =
  11. 11.311 − 289 =
  12. 12.301 − 292 =
  13. 13.1001 − 982 =
  14. 14.118 − 97 =
  15. 15.83 − 57 =
  16. 16.307 − 292 =
  17. 17.55 − 38 =
  18. 18.93 − 78 =
  19. 19.507 − 482 =
  20. 20.306 − 294 =
  21. 21.1007 − 980 =
  22. 22.523 − 491 =
  23. 23.315 − 276 =
  24. 24.88 − 57 =
  25. 25.61 − 45 =
  26. 26.120 − 94 =
  27. 27.109 − 86 =
  28. 28.116 − 84 =
  29. 29.324 − 275 =
  30. 30.59 − 42 =
  31. 31.101 − 61 =
  32. 32.117 − 82 =
  33. 33.307 − 289 =
  34. 34.54 − 35 =
  35. 35.228 − 196 =
  36. 36.1001 − 976 =
  37. 37.85 − 74 =
  38. 38.112 − 98 =
  39. 39.309 − 275 =
  40. 40.502 − 484 =

Answer key

  1. 25
  2. 45
  3. 27
  4. 36
  5. 40
  6. 9
  7. 22
  8. 8
  9. 11
  10. 26
  11. 22
  12. 9
  13. 19
  14. 21
  15. 26
  16. 15
  17. 17
  18. 15
  19. 25
  20. 12
  21. 27
  22. 32
  23. 39
  24. 31
  25. 16
  26. 26
  27. 23
  28. 32
  29. 49
  30. 17
  31. 40
  32. 35
  33. 18
  34. 19
  35. 32
  36. 25
  37. 11
  38. 14
  39. 34
  40. 18

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