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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 956 · 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. 1.311 − 291 =
  2. 2.93 − 70 =
  3. 3.77 − 30 =
  4. 4.68 − 35 =
  5. 5.1018 − 980 =
  6. 6.82 − 72 =
  7. 7.326 − 276 =
  8. 8.59 − 25 =
  9. 9.81 − 74 =
  10. 10.527 − 487 =
  11. 11.51 − 44 =
  12. 12.51 − 37 =
  13. 13.213 − 175 =
  14. 14.109 − 80 =
  15. 15.518 − 494 =
  16. 16.100 − 77 =
  17. 17.210 − 176 =
  18. 18.526 − 488 =
  19. 19.1012 − 984 =
  20. 20.94 − 62 =
  21. 21.54 − 46 =
  22. 22.107 − 74 =
  23. 23.321 − 293 =
  24. 24.505 − 494 =
  25. 25.128 − 76 =
  26. 26.324 − 276 =
  27. 27.303 − 293 =
  28. 28.69 − 25 =
  29. 29.513 − 475 =
  30. 30.225 − 196 =
  31. 31.103 − 85 =
  32. 32.228 − 195 =
  33. 33.92 − 64 =
  34. 34.83 − 56 =
  35. 35.228 − 175 =
  36. 36.1017 − 976 =
  37. 37.125 − 86 =
  38. 38.103 − 64 =
  39. 39.78 − 32 =
  40. 40.1012 − 982 =

Answer key

  1. 20
  2. 23
  3. 47
  4. 33
  5. 38
  6. 10
  7. 50
  8. 34
  9. 7
  10. 40
  11. 7
  12. 14
  13. 38
  14. 29
  15. 24
  16. 23
  17. 34
  18. 38
  19. 28
  20. 32
  21. 8
  22. 33
  23. 28
  24. 11
  25. 52
  26. 48
  27. 10
  28. 44
  29. 38
  30. 29
  31. 18
  32. 33
  33. 28
  34. 27
  35. 53
  36. 41
  37. 39
  38. 39
  39. 46
  40. 30

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