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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 873 · 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. 1.51 − 33 =
  2. 2.211 − 182 =
  3. 3.105 − 61 =
  4. 4.63 − 45 =
  5. 5.103 − 81 =
  6. 6.51 − 29 =
  7. 7.203 − 177 =
  8. 8.218 − 194 =
  9. 9.229 − 193 =
  10. 10.119 − 79 =
  11. 11.74 − 29 =
  12. 12.59 − 25 =
  13. 13.207 − 176 =
  14. 14.501 − 497 =
  15. 15.115 − 89 =
  16. 16.56 − 48 =
  17. 17.111 − 94 =
  18. 18.329 − 296 =
  19. 19.526 − 495 =
  20. 20.1008 − 986 =
  21. 21.305 − 298 =
  22. 22.68 − 48 =
  23. 23.106 − 90 =
  24. 24.217 − 181 =
  25. 25.114 − 90 =
  26. 26.212 − 197 =
  27. 27.129 − 75 =
  28. 28.116 − 93 =
  29. 29.504 − 486 =
  30. 30.98 − 76 =
  31. 31.73 − 25 =
  32. 32.77 − 45 =
  33. 33.1002 − 993 =
  34. 34.209 − 179 =
  35. 35.1029 − 993 =
  36. 36.101 − 89 =
  37. 37.111 − 80 =
  38. 38.1026 − 980 =
  39. 39.1027 − 993 =
  40. 40.84 − 69 =

Answer key

  1. 18
  2. 29
  3. 44
  4. 18
  5. 22
  6. 22
  7. 26
  8. 24
  9. 36
  10. 40
  11. 45
  12. 34
  13. 31
  14. 4
  15. 26
  16. 8
  17. 17
  18. 33
  19. 31
  20. 22
  21. 7
  22. 20
  23. 16
  24. 36
  25. 24
  26. 15
  27. 54
  28. 23
  29. 18
  30. 22
  31. 48
  32. 32
  33. 9
  34. 30
  35. 36
  36. 12
  37. 31
  38. 46
  39. 34
  40. 15

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