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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 974 · 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. 1.116 − 97 =
  2. 2.1025 − 980 =
  3. 3.78 − 37 =
  4. 4.222 − 187 =
  5. 5.1008 − 993 =
  6. 6.108 − 97 =
  7. 7.110 − 81 =
  8. 8.129 − 85 =
  9. 9.501 − 494 =
  10. 10.203 − 195 =
  11. 11.321 − 291 =
  12. 12.61 − 27 =
  13. 13.212 − 189 =
  14. 14.108 − 81 =
  15. 15.96 − 77 =
  16. 16.90 − 73 =
  17. 17.51 − 42 =
  18. 18.70 − 43 =
  19. 19.77 − 44 =
  20. 20.126 − 76 =
  21. 21.78 − 38 =
  22. 22.106 − 57 =
  23. 23.325 − 284 =
  24. 24.503 − 492 =
  25. 25.501 − 475 =
  26. 26.326 − 298 =
  27. 27.221 − 190 =
  28. 28.114 − 98 =
  29. 29.75 − 43 =
  30. 30.304 − 295 =
  31. 31.304 − 297 =
  32. 32.324 − 295 =
  33. 33.116 − 95 =
  34. 34.118 − 84 =
  35. 35.1021 − 979 =
  36. 36.1010 − 982 =
  37. 37.314 − 287 =
  38. 38.201 − 182 =
  39. 39.1017 − 981 =
  40. 40.515 − 482 =

Answer key

  1. 19
  2. 45
  3. 41
  4. 35
  5. 15
  6. 11
  7. 29
  8. 44
  9. 7
  10. 8
  11. 30
  12. 34
  13. 23
  14. 27
  15. 19
  16. 17
  17. 9
  18. 27
  19. 33
  20. 50
  21. 40
  22. 49
  23. 41
  24. 11
  25. 26
  26. 28
  27. 31
  28. 16
  29. 32
  30. 9
  31. 7
  32. 29
  33. 21
  34. 34
  35. 42
  36. 28
  37. 27
  38. 19
  39. 36
  40. 33

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