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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 694 · 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. 1.217 − 190 =
  2. 2.74 − 36 =
  3. 3.1028 − 994 =
  4. 4.67 − 46 =
  5. 5.95 − 64 =
  6. 6.124 − 75 =
  7. 7.68 − 42 =
  8. 8.57 − 48 =
  9. 9.1022 − 989 =
  10. 10.328 − 293 =
  11. 11.213 − 186 =
  12. 12.82 − 78 =
  13. 13.89 − 65 =
  14. 14.68 − 29 =
  15. 15.71 − 33 =
  16. 16.310 − 278 =
  17. 17.113 − 81 =
  18. 18.107 − 81 =
  19. 19.1021 − 991 =
  20. 20.304 − 284 =
  21. 21.61 − 44 =
  22. 22.317 − 285 =
  23. 23.516 − 475 =
  24. 24.313 − 280 =
  25. 25.315 − 286 =
  26. 26.122 − 76 =
  27. 27.524 − 478 =
  28. 28.301 − 283 =
  29. 29.314 − 289 =
  30. 30.96 − 78 =
  31. 31.108 − 62 =
  32. 32.501 − 479 =
  33. 33.67 − 43 =
  34. 34.90 − 76 =
  35. 35.213 − 181 =
  36. 36.51 − 41 =
  37. 37.65 − 27 =
  38. 38.327 − 280 =
  39. 39.1015 − 977 =
  40. 40.103 − 95 =

Answer key

  1. 27
  2. 38
  3. 34
  4. 21
  5. 31
  6. 49
  7. 26
  8. 9
  9. 33
  10. 35
  11. 27
  12. 4
  13. 24
  14. 39
  15. 38
  16. 32
  17. 32
  18. 26
  19. 30
  20. 20
  21. 17
  22. 32
  23. 41
  24. 33
  25. 29
  26. 46
  27. 46
  28. 18
  29. 25
  30. 18
  31. 46
  32. 22
  33. 24
  34. 14
  35. 32
  36. 10
  37. 38
  38. 47
  39. 38
  40. 8

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