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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 781 · 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. 1.322 − 282 =
  2. 2.221 − 189 =
  3. 3.522 − 491 =
  4. 4.97 − 77 =
  5. 5.83 − 76 =
  6. 6.103 − 71 =
  7. 7.70 − 29 =
  8. 8.310 − 290 =
  9. 9.502 − 487 =
  10. 10.302 − 295 =
  11. 11.108 − 75 =
  12. 12.204 − 194 =
  13. 13.304 − 279 =
  14. 14.527 − 488 =
  15. 15.76 − 46 =
  16. 16.94 − 58 =
  17. 17.330 − 291 =
  18. 18.227 − 185 =
  19. 19.204 − 195 =
  20. 20.55 − 34 =
  21. 21.73 − 47 =
  22. 22.1007 − 994 =
  23. 23.91 − 70 =
  24. 24.1013 − 983 =
  25. 25.1005 − 998 =
  26. 26.54 − 34 =
  27. 27.123 − 93 =
  28. 28.106 − 61 =
  29. 29.327 − 284 =
  30. 30.68 − 46 =
  31. 31.317 − 276 =
  32. 32.314 − 291 =
  33. 33.524 − 484 =
  34. 34.60 − 37 =
  35. 35.1028 − 983 =
  36. 36.529 − 498 =
  37. 37.70 − 31 =
  38. 38.106 − 93 =
  39. 39.67 − 40 =
  40. 40.117 − 94 =

Answer key

  1. 40
  2. 32
  3. 31
  4. 20
  5. 7
  6. 32
  7. 41
  8. 20
  9. 15
  10. 7
  11. 33
  12. 10
  13. 25
  14. 39
  15. 30
  16. 36
  17. 39
  18. 42
  19. 9
  20. 21
  21. 26
  22. 13
  23. 21
  24. 30
  25. 7
  26. 20
  27. 30
  28. 45
  29. 43
  30. 22
  31. 41
  32. 23
  33. 40
  34. 23
  35. 45
  36. 31
  37. 39
  38. 13
  39. 27
  40. 23

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