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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 592 · 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. 1.215 − 182 =
  2. 2.1013 − 986 =
  3. 3.80 − 34 =
  4. 4.502 − 495 =
  5. 5.1030 − 983 =
  6. 6.69 − 34 =
  7. 7.93 − 63 =
  8. 8.71 − 46 =
  9. 9.120 − 93 =
  10. 10.1009 − 991 =
  11. 11.208 − 177 =
  12. 12.125 − 96 =
  13. 13.1016 − 990 =
  14. 14.529 − 485 =
  15. 15.75 − 45 =
  16. 16.530 − 493 =
  17. 17.103 − 66 =
  18. 18.85 − 67 =
  19. 19.1013 − 988 =
  20. 20.1025 − 988 =
  21. 21.508 − 493 =
  22. 22.103 − 87 =
  23. 23.515 − 493 =
  24. 24.106 − 78 =
  25. 25.218 − 192 =
  26. 26.114 − 82 =
  27. 27.51 − 48 =
  28. 28.230 − 180 =
  29. 29.75 − 43 =
  30. 30.504 − 489 =
  31. 31.53 − 28 =
  32. 32.1030 − 984 =
  33. 33.507 − 484 =
  34. 34.77 − 28 =
  35. 35.96 − 75 =
  36. 36.205 − 196 =
  37. 37.1021 − 993 =
  38. 38.226 − 194 =
  39. 39.58 − 35 =
  40. 40.303 − 293 =

Answer key

  1. 33
  2. 27
  3. 46
  4. 7
  5. 47
  6. 35
  7. 30
  8. 25
  9. 27
  10. 18
  11. 31
  12. 29
  13. 26
  14. 44
  15. 30
  16. 37
  17. 37
  18. 18
  19. 25
  20. 37
  21. 15
  22. 16
  23. 22
  24. 28
  25. 26
  26. 32
  27. 3
  28. 50
  29. 32
  30. 15
  31. 25
  32. 46
  33. 23
  34. 49
  35. 21
  36. 9
  37. 28
  38. 32
  39. 23
  40. 10

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