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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 664 · 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. 1.1023 − 991 =
  2. 2.203 − 191 =
  3. 3.1002 − 990 =
  4. 4.210 − 182 =
  5. 5.213 − 190 =
  6. 6.304 − 286 =
  7. 7.59 − 34 =
  8. 8.223 − 187 =
  9. 9.57 − 40 =
  10. 10.304 − 296 =
  11. 11.97 − 67 =
  12. 12.102 − 69 =
  13. 13.64 − 43 =
  14. 14.86 − 65 =
  15. 15.526 − 487 =
  16. 16.119 − 89 =
  17. 17.510 − 495 =
  18. 18.95 − 76 =
  19. 19.98 − 57 =
  20. 20.67 − 48 =
  21. 21.54 − 36 =
  22. 22.67 − 45 =
  23. 23.513 − 487 =
  24. 24.216 − 185 =
  25. 25.118 − 75 =
  26. 26.95 − 59 =
  27. 27.93 − 72 =
  28. 28.86 − 69 =
  29. 29.327 − 293 =
  30. 30.60 − 31 =
  31. 31.218 − 185 =
  32. 32.126 − 78 =
  33. 33.76 − 37 =
  34. 34.512 − 496 =
  35. 35.87 − 65 =
  36. 36.325 − 298 =
  37. 37.95 − 63 =
  38. 38.102 − 91 =
  39. 39.83 − 56 =
  40. 40.525 − 488 =

Answer key

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

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