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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 508 · 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. 1.55 − 35 =
  2. 2.66 − 39 =
  3. 3.108 − 61 =
  4. 4.202 − 188 =
  5. 5.101 − 72 =
  6. 6.306 − 276 =
  7. 7.84 − 73 =
  8. 8.52 − 44 =
  9. 9.54 − 33 =
  10. 10.310 − 296 =
  11. 11.111 − 95 =
  12. 12.77 − 48 =
  13. 13.104 − 62 =
  14. 14.306 − 286 =
  15. 15.75 − 39 =
  16. 16.506 − 485 =
  17. 17.104 − 92 =
  18. 18.206 − 186 =
  19. 19.54 − 44 =
  20. 20.203 − 186 =
  21. 21.70 − 30 =
  22. 22.71 − 37 =
  23. 23.103 − 68 =
  24. 24.325 − 285 =
  25. 25.527 − 484 =
  26. 26.112 − 92 =
  27. 27.105 − 93 =
  28. 28.117 − 98 =
  29. 29.104 − 69 =
  30. 30.1011 − 997 =
  31. 31.522 − 496 =
  32. 32.54 − 39 =
  33. 33.89 − 65 =
  34. 34.51 − 34 =
  35. 35.325 − 288 =
  36. 36.73 − 38 =
  37. 37.87 − 70 =
  38. 38.210 − 195 =
  39. 39.310 − 285 =
  40. 40.306 − 279 =

Answer key

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

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