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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 514 · 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. 1.306 − 298 =
  2. 2.320 − 291 =
  3. 3.204 − 178 =
  4. 4.109 − 95 =
  5. 5.94 − 74 =
  6. 6.210 − 177 =
  7. 7.311 − 293 =
  8. 8.80 − 35 =
  9. 9.54 − 35 =
  10. 10.211 − 181 =
  11. 11.506 − 496 =
  12. 12.72 − 30 =
  13. 13.201 − 182 =
  14. 14.221 − 196 =
  15. 15.70 − 33 =
  16. 16.313 − 285 =
  17. 17.1006 − 996 =
  18. 18.82 − 60 =
  19. 19.212 − 194 =
  20. 20.1003 − 984 =
  21. 21.73 − 46 =
  22. 22.221 − 197 =
  23. 23.509 − 480 =
  24. 24.1007 − 984 =
  25. 25.83 − 70 =
  26. 26.87 − 66 =
  27. 27.70 − 32 =
  28. 28.91 − 76 =
  29. 29.95 − 66 =
  30. 30.109 − 97 =
  31. 31.91 − 72 =
  32. 32.130 − 85 =
  33. 33.95 − 76 =
  34. 34.302 − 296 =
  35. 35.319 − 284 =
  36. 36.89 − 59 =
  37. 37.66 − 37 =
  38. 38.216 − 194 =
  39. 39.301 − 292 =
  40. 40.80 − 40 =

Answer key

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

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