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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 324 · 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. 1.514 − 478 =
  2. 2.75 − 47 =
  3. 3.329 − 290 =
  4. 4.68 − 48 =
  5. 5.317 − 295 =
  6. 6.525 − 480 =
  7. 7.309 − 295 =
  8. 8.106 − 98 =
  9. 9.58 − 30 =
  10. 10.106 − 79 =
  11. 11.1026 − 995 =
  12. 12.230 − 188 =
  13. 13.1016 − 986 =
  14. 14.312 − 282 =
  15. 15.81 − 73 =
  16. 16.1024 − 991 =
  17. 17.100 − 70 =
  18. 18.1006 − 989 =
  19. 19.205 − 192 =
  20. 20.222 − 187 =
  21. 21.308 − 279 =
  22. 22.519 − 485 =
  23. 23.65 − 27 =
  24. 24.71 − 41 =
  25. 25.60 − 25 =
  26. 26.105 − 86 =
  27. 27.202 − 175 =
  28. 28.1012 − 986 =
  29. 29.524 − 491 =
  30. 30.110 − 80 =
  31. 31.307 − 281 =
  32. 32.501 − 496 =
  33. 33.71 − 30 =
  34. 34.526 − 496 =
  35. 35.318 − 275 =
  36. 36.52 − 42 =
  37. 37.65 − 48 =
  38. 38.325 − 275 =
  39. 39.101 − 89 =
  40. 40.93 − 60 =

Answer key

  1. 36
  2. 28
  3. 39
  4. 20
  5. 22
  6. 45
  7. 14
  8. 8
  9. 28
  10. 27
  11. 31
  12. 42
  13. 30
  14. 30
  15. 8
  16. 33
  17. 30
  18. 17
  19. 13
  20. 35
  21. 29
  22. 34
  23. 38
  24. 30
  25. 35
  26. 19
  27. 27
  28. 26
  29. 33
  30. 30
  31. 26
  32. 5
  33. 41
  34. 30
  35. 43
  36. 10
  37. 17
  38. 50
  39. 12
  40. 33

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