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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 63 · 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. 1.128 − 96 =
  2. 2.53 − 41 =
  3. 3.222 − 198 =
  4. 4.87 − 64 =
  5. 5.1019 − 977 =
  6. 6.519 − 477 =
  7. 7.1002 − 998 =
  8. 8.506 − 477 =
  9. 9.516 − 487 =
  10. 10.56 − 26 =
  11. 11.506 − 490 =
  12. 12.225 − 194 =
  13. 13.88 − 63 =
  14. 14.123 − 98 =
  15. 15.96 − 55 =
  16. 16.208 − 185 =
  17. 17.207 − 189 =
  18. 18.1013 − 984 =
  19. 19.105 − 62 =
  20. 20.117 − 96 =
  21. 21.506 − 487 =
  22. 22.86 − 75 =
  23. 23.1027 − 992 =
  24. 24.79 − 28 =
  25. 25.119 − 94 =
  26. 26.88 − 74 =
  27. 27.504 − 493 =
  28. 28.304 − 292 =
  29. 29.51 − 34 =
  30. 30.74 − 29 =
  31. 31.123 − 89 =
  32. 32.301 − 285 =
  33. 33.112 − 80 =
  34. 34.304 − 294 =
  35. 35.318 − 295 =
  36. 36.317 − 283 =
  37. 37.84 − 73 =
  38. 38.54 − 27 =
  39. 39.309 − 293 =
  40. 40.530 − 485 =

Answer key

  1. 32
  2. 12
  3. 24
  4. 23
  5. 42
  6. 42
  7. 4
  8. 29
  9. 29
  10. 30
  11. 16
  12. 31
  13. 25
  14. 25
  15. 41
  16. 23
  17. 18
  18. 29
  19. 43
  20. 21
  21. 19
  22. 11
  23. 35
  24. 51
  25. 25
  26. 14
  27. 11
  28. 12
  29. 17
  30. 45
  31. 34
  32. 16
  33. 32
  34. 10
  35. 23
  36. 34
  37. 11
  38. 27
  39. 16
  40. 45

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