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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 832 · 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. 1.58 − 30 =
  2. 2.1029 − 992 =
  3. 3.314 − 293 =
  4. 4.201 − 188 =
  5. 5.507 − 492 =
  6. 6.104 − 58 =
  7. 7.216 − 175 =
  8. 8.125 − 98 =
  9. 9.59 − 39 =
  10. 10.326 − 296 =
  11. 11.509 − 495 =
  12. 12.201 − 192 =
  13. 13.525 − 498 =
  14. 14.108 − 61 =
  15. 15.128 − 85 =
  16. 16.308 − 298 =
  17. 17.83 − 73 =
  18. 18.321 − 276 =
  19. 19.229 − 184 =
  20. 20.74 − 26 =
  21. 21.60 − 26 =
  22. 22.99 − 61 =
  23. 23.97 − 72 =
  24. 24.124 − 84 =
  25. 25.125 − 84 =
  26. 26.210 − 190 =
  27. 27.85 − 55 =
  28. 28.90 − 61 =
  29. 29.97 − 59 =
  30. 30.1015 − 979 =
  31. 31.220 − 176 =
  32. 32.1029 − 975 =
  33. 33.52 − 32 =
  34. 34.303 − 287 =
  35. 35.518 − 481 =
  36. 36.302 − 293 =
  37. 37.64 − 37 =
  38. 38.218 − 189 =
  39. 39.217 − 187 =
  40. 40.521 − 495 =

Answer key

  1. 28
  2. 37
  3. 21
  4. 13
  5. 15
  6. 46
  7. 41
  8. 27
  9. 20
  10. 30
  11. 14
  12. 9
  13. 27
  14. 47
  15. 43
  16. 10
  17. 10
  18. 45
  19. 45
  20. 48
  21. 34
  22. 38
  23. 25
  24. 40
  25. 41
  26. 20
  27. 30
  28. 29
  29. 38
  30. 36
  31. 44
  32. 54
  33. 20
  34. 16
  35. 37
  36. 9
  37. 27
  38. 29
  39. 30
  40. 26

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