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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 244 · 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. 1.216 − 198 =
  2. 2.1023 − 994 =
  3. 3.1021 − 995 =
  4. 4.86 − 77 =
  5. 5.303 − 285 =
  6. 6.507 − 498 =
  7. 7.301 − 293 =
  8. 8.222 − 180 =
  9. 9.201 − 194 =
  10. 10.216 − 175 =
  11. 11.329 − 278 =
  12. 12.127 − 97 =
  13. 13.56 − 29 =
  14. 14.1002 − 991 =
  15. 15.312 − 292 =
  16. 16.215 − 177 =
  17. 17.94 − 70 =
  18. 18.218 − 196 =
  19. 19.83 − 55 =
  20. 20.519 − 493 =
  21. 21.121 − 93 =
  22. 22.208 − 197 =
  23. 23.102 − 78 =
  24. 24.109 − 98 =
  25. 25.66 − 32 =
  26. 26.1025 − 989 =
  27. 27.230 − 182 =
  28. 28.1027 − 994 =
  29. 29.520 − 498 =
  30. 30.224 − 182 =
  31. 31.56 − 32 =
  32. 32.1006 − 998 =
  33. 33.205 − 188 =
  34. 34.503 − 495 =
  35. 35.1021 − 984 =
  36. 36.105 − 86 =
  37. 37.76 − 35 =
  38. 38.101 − 85 =
  39. 39.109 − 91 =
  40. 40.205 − 196 =

Answer key

  1. 18
  2. 29
  3. 26
  4. 9
  5. 18
  6. 9
  7. 8
  8. 42
  9. 7
  10. 41
  11. 51
  12. 30
  13. 27
  14. 11
  15. 20
  16. 38
  17. 24
  18. 22
  19. 28
  20. 26
  21. 28
  22. 11
  23. 24
  24. 11
  25. 34
  26. 36
  27. 48
  28. 33
  29. 22
  30. 42
  31. 24
  32. 8
  33. 17
  34. 8
  35. 37
  36. 19
  37. 41
  38. 16
  39. 18
  40. 9

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