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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 348 · 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. 1.65 − 43 =
  2. 2.1029 − 992 =
  3. 3.82 − 76 =
  4. 4.60 − 34 =
  5. 5.85 − 67 =
  6. 6.52 − 37 =
  7. 7.99 − 77 =
  8. 8.502 − 479 =
  9. 9.216 − 183 =
  10. 10.87 − 71 =
  11. 11.512 − 495 =
  12. 12.511 − 495 =
  13. 13.97 − 75 =
  14. 14.110 − 55 =
  15. 15.501 − 483 =
  16. 16.106 − 60 =
  17. 17.105 − 58 =
  18. 18.214 − 178 =
  19. 19.1001 − 976 =
  20. 20.81 − 67 =
  21. 21.211 − 191 =
  22. 22.307 − 290 =
  23. 23.1015 − 990 =
  24. 24.225 − 192 =
  25. 25.101 − 84 =
  26. 26.530 − 497 =
  27. 27.328 − 290 =
  28. 28.103 − 97 =
  29. 29.220 − 187 =
  30. 30.81 − 77 =
  31. 31.205 − 183 =
  32. 32.75 − 29 =
  33. 33.1024 − 976 =
  34. 34.1008 − 988 =
  35. 35.55 − 35 =
  36. 36.121 − 84 =
  37. 37.84 − 59 =
  38. 38.307 − 287 =
  39. 39.224 − 179 =
  40. 40.57 − 30 =

Answer key

  1. 22
  2. 37
  3. 6
  4. 26
  5. 18
  6. 15
  7. 22
  8. 23
  9. 33
  10. 16
  11. 17
  12. 16
  13. 22
  14. 55
  15. 18
  16. 46
  17. 47
  18. 36
  19. 25
  20. 14
  21. 20
  22. 17
  23. 25
  24. 33
  25. 17
  26. 33
  27. 38
  28. 6
  29. 33
  30. 4
  31. 22
  32. 46
  33. 48
  34. 20
  35. 20
  36. 37
  37. 25
  38. 20
  39. 45
  40. 27

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