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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 407 · 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. 1.218 − 181 =
  2. 2.226 − 183 =
  3. 3.303 − 283 =
  4. 4.201 − 175 =
  5. 5.100 − 71 =
  6. 6.1015 − 979 =
  7. 7.65 − 36 =
  8. 8.69 − 36 =
  9. 9.203 − 185 =
  10. 10.330 − 296 =
  11. 11.74 − 44 =
  12. 12.99 − 58 =
  13. 13.51 − 41 =
  14. 14.84 − 78 =
  15. 15.308 − 295 =
  16. 16.528 − 477 =
  17. 17.309 − 283 =
  18. 18.223 − 190 =
  19. 19.73 − 41 =
  20. 20.1002 − 984 =
  21. 21.305 − 285 =
  22. 22.224 − 182 =
  23. 23.106 − 96 =
  24. 24.59 − 31 =
  25. 25.1020 − 989 =
  26. 26.225 − 190 =
  27. 27.108 − 72 =
  28. 28.100 − 68 =
  29. 29.71 − 41 =
  30. 30.307 − 280 =
  31. 31.1024 − 983 =
  32. 32.525 − 496 =
  33. 33.1006 − 989 =
  34. 34.51 − 39 =
  35. 35.501 − 480 =
  36. 36.214 − 176 =
  37. 37.117 − 88 =
  38. 38.66 − 39 =
  39. 39.90 − 59 =
  40. 40.502 − 488 =

Answer key

  1. 37
  2. 43
  3. 20
  4. 26
  5. 29
  6. 36
  7. 29
  8. 33
  9. 18
  10. 34
  11. 30
  12. 41
  13. 10
  14. 6
  15. 13
  16. 51
  17. 26
  18. 33
  19. 32
  20. 18
  21. 20
  22. 42
  23. 10
  24. 28
  25. 31
  26. 35
  27. 36
  28. 32
  29. 30
  30. 27
  31. 41
  32. 29
  33. 17
  34. 12
  35. 21
  36. 38
  37. 29
  38. 27
  39. 31
  40. 14

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