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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 723 · 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. 1.81 − 73 =
  2. 2.126 − 85 =
  3. 3.110 − 73 =
  4. 4.64 − 37 =
  5. 5.91 − 57 =
  6. 6.201 − 182 =
  7. 7.120 − 89 =
  8. 8.514 − 476 =
  9. 9.68 − 25 =
  10. 10.53 − 32 =
  11. 11.106 − 82 =
  12. 12.511 − 494 =
  13. 13.106 − 97 =
  14. 14.110 − 76 =
  15. 15.75 − 28 =
  16. 16.316 − 292 =
  17. 17.329 − 287 =
  18. 18.213 − 193 =
  19. 19.230 − 193 =
  20. 20.85 − 58 =
  21. 21.204 − 176 =
  22. 22.102 − 76 =
  23. 23.106 − 91 =
  24. 24.107 − 96 =
  25. 25.1003 − 994 =
  26. 26.70 − 44 =
  27. 27.66 − 40 =
  28. 28.114 − 97 =
  29. 29.529 − 480 =
  30. 30.54 − 29 =
  31. 31.107 − 78 =
  32. 32.230 − 192 =
  33. 33.505 − 492 =
  34. 34.66 − 41 =
  35. 35.1016 − 998 =
  36. 36.319 − 275 =
  37. 37.127 − 81 =
  38. 38.1006 − 978 =
  39. 39.301 − 296 =
  40. 40.508 − 493 =

Answer key

  1. 8
  2. 41
  3. 37
  4. 27
  5. 34
  6. 19
  7. 31
  8. 38
  9. 43
  10. 21
  11. 24
  12. 17
  13. 9
  14. 34
  15. 47
  16. 24
  17. 42
  18. 20
  19. 37
  20. 27
  21. 28
  22. 26
  23. 15
  24. 11
  25. 9
  26. 26
  27. 26
  28. 17
  29. 49
  30. 25
  31. 29
  32. 38
  33. 13
  34. 25
  35. 18
  36. 44
  37. 46
  38. 28
  39. 5
  40. 15

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