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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 92 · 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. 1.302 − 294 =
  2. 2.82 − 57 =
  3. 3.97 − 66 =
  4. 4.210 − 194 =
  5. 5.83 − 69 =
  6. 6.221 − 195 =
  7. 7.309 − 295 =
  8. 8.58 − 45 =
  9. 9.529 − 494 =
  10. 10.105 − 66 =
  11. 11.209 − 197 =
  12. 12.91 − 72 =
  13. 13.326 − 289 =
  14. 14.229 − 179 =
  15. 15.91 − 74 =
  16. 16.301 − 283 =
  17. 17.526 − 489 =
  18. 18.81 − 69 =
  19. 19.205 − 190 =
  20. 20.101 − 60 =
  21. 21.78 − 45 =
  22. 22.517 − 487 =
  23. 23.312 − 280 =
  24. 24.1008 − 987 =
  25. 25.323 − 290 =
  26. 26.98 − 65 =
  27. 27.520 − 480 =
  28. 28.502 − 492 =
  29. 29.82 − 66 =
  30. 30.519 − 483 =
  31. 31.63 − 42 =
  32. 32.105 − 57 =
  33. 33.303 − 297 =
  34. 34.206 − 180 =
  35. 35.105 − 91 =
  36. 36.221 − 176 =
  37. 37.1012 − 975 =
  38. 38.100 − 63 =
  39. 39.102 − 74 =
  40. 40.509 − 481 =

Answer key

  1. 8
  2. 25
  3. 31
  4. 16
  5. 14
  6. 26
  7. 14
  8. 13
  9. 35
  10. 39
  11. 12
  12. 19
  13. 37
  14. 50
  15. 17
  16. 18
  17. 37
  18. 12
  19. 15
  20. 41
  21. 33
  22. 30
  23. 32
  24. 21
  25. 33
  26. 33
  27. 40
  28. 10
  29. 16
  30. 36
  31. 21
  32. 48
  33. 6
  34. 26
  35. 14
  36. 45
  37. 37
  38. 37
  39. 28
  40. 28

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