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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 338 · 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. 1.85 − 76 =
  2. 2.115 − 85 =
  3. 3.305 − 292 =
  4. 4.101 − 65 =
  5. 5.1022 − 980 =
  6. 6.216 − 177 =
  7. 7.307 − 283 =
  8. 8.529 − 475 =
  9. 9.56 − 26 =
  10. 10.505 − 488 =
  11. 11.521 − 489 =
  12. 12.93 − 69 =
  13. 13.205 − 195 =
  14. 14.213 − 182 =
  15. 15.53 − 28 =
  16. 16.128 − 97 =
  17. 17.87 − 58 =
  18. 18.106 − 68 =
  19. 19.112 − 86 =
  20. 20.125 − 75 =
  21. 21.69 − 45 =
  22. 22.108 − 78 =
  23. 23.120 − 83 =
  24. 24.63 − 31 =
  25. 25.327 − 277 =
  26. 26.519 − 489 =
  27. 27.109 − 67 =
  28. 28.107 − 88 =
  29. 29.222 − 180 =
  30. 30.125 − 84 =
  31. 31.78 − 25 =
  32. 32.98 − 67 =
  33. 33.124 − 85 =
  34. 34.70 − 39 =
  35. 35.1004 − 975 =
  36. 36.514 − 477 =
  37. 37.123 − 82 =
  38. 38.324 − 288 =
  39. 39.304 − 279 =
  40. 40.114 − 92 =

Answer key

  1. 9
  2. 30
  3. 13
  4. 36
  5. 42
  6. 39
  7. 24
  8. 54
  9. 30
  10. 17
  11. 32
  12. 24
  13. 10
  14. 31
  15. 25
  16. 31
  17. 29
  18. 38
  19. 26
  20. 50
  21. 24
  22. 30
  23. 37
  24. 32
  25. 50
  26. 30
  27. 42
  28. 19
  29. 42
  30. 41
  31. 53
  32. 31
  33. 39
  34. 31
  35. 29
  36. 37
  37. 41
  38. 36
  39. 25
  40. 22

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