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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 674 · 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. 1.1002 − 995 =
  2. 2.1006 − 979 =
  3. 3.201 − 183 =
  4. 4.116 − 93 =
  5. 5.218 − 180 =
  6. 6.125 − 90 =
  7. 7.66 − 48 =
  8. 8.224 − 188 =
  9. 9.523 − 477 =
  10. 10.303 − 277 =
  11. 11.106 − 67 =
  12. 12.1019 − 996 =
  13. 13.223 − 180 =
  14. 14.1027 − 985 =
  15. 15.511 − 490 =
  16. 16.213 − 182 =
  17. 17.517 − 485 =
  18. 18.117 − 91 =
  19. 19.89 − 68 =
  20. 20.72 − 35 =
  21. 21.324 − 297 =
  22. 22.76 − 48 =
  23. 23.79 − 33 =
  24. 24.107 − 77 =
  25. 25.1020 − 994 =
  26. 26.226 − 177 =
  27. 27.64 − 46 =
  28. 28.208 − 185 =
  29. 29.322 − 284 =
  30. 30.107 − 84 =
  31. 31.206 − 193 =
  32. 32.523 − 489 =
  33. 33.505 − 492 =
  34. 34.1026 − 983 =
  35. 35.110 − 62 =
  36. 36.307 − 296 =
  37. 37.324 − 284 =
  38. 38.313 − 283 =
  39. 39.325 − 276 =
  40. 40.1013 − 998 =

Answer key

  1. 7
  2. 27
  3. 18
  4. 23
  5. 38
  6. 35
  7. 18
  8. 36
  9. 46
  10. 26
  11. 39
  12. 23
  13. 43
  14. 42
  15. 21
  16. 31
  17. 32
  18. 26
  19. 21
  20. 37
  21. 27
  22. 28
  23. 46
  24. 30
  25. 26
  26. 49
  27. 18
  28. 23
  29. 38
  30. 23
  31. 13
  32. 34
  33. 13
  34. 43
  35. 48
  36. 11
  37. 40
  38. 30
  39. 49
  40. 15

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