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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 477 · 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. 1.77 − 45 =
  2. 2.58 − 27 =
  3. 3.206 − 195 =
  4. 4.1015 − 984 =
  5. 5.65 − 39 =
  6. 6.90 − 73 =
  7. 7.105 − 96 =
  8. 8.57 − 26 =
  9. 9.117 − 75 =
  10. 10.230 − 181 =
  11. 11.1001 − 980 =
  12. 12.79 − 30 =
  13. 13.315 − 293 =
  14. 14.103 − 59 =
  15. 15.223 − 196 =
  16. 16.225 − 187 =
  17. 17.501 − 493 =
  18. 18.210 − 193 =
  19. 19.108 − 76 =
  20. 20.1011 − 996 =
  21. 21.92 − 73 =
  22. 22.116 − 83 =
  23. 23.77 − 33 =
  24. 24.83 − 60 =
  25. 25.103 − 94 =
  26. 26.1005 − 979 =
  27. 27.78 − 28 =
  28. 28.56 − 26 =
  29. 29.84 − 65 =
  30. 30.51 − 38 =
  31. 31.1004 − 975 =
  32. 32.122 − 92 =
  33. 33.204 − 177 =
  34. 34.82 − 71 =
  35. 35.514 − 497 =
  36. 36.505 − 478 =
  37. 37.56 − 45 =
  38. 38.66 − 43 =
  39. 39.89 − 63 =
  40. 40.96 − 65 =

Answer key

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

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