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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 148 · 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. 1.105 − 96 =
  2. 2.223 − 182 =
  3. 3.313 − 281 =
  4. 4.93 − 59 =
  5. 5.63 − 35 =
  6. 6.1003 − 990 =
  7. 7.529 − 476 =
  8. 8.96 − 69 =
  9. 9.511 − 479 =
  10. 10.204 − 182 =
  11. 11.307 − 294 =
  12. 12.104 − 77 =
  13. 13.53 − 41 =
  14. 14.219 − 184 =
  15. 15.529 − 479 =
  16. 16.67 − 44 =
  17. 17.516 − 481 =
  18. 18.121 − 81 =
  19. 19.1011 − 985 =
  20. 20.82 − 56 =
  21. 21.309 − 296 =
  22. 22.303 − 277 =
  23. 23.121 − 75 =
  24. 24.1015 − 977 =
  25. 25.110 − 84 =
  26. 26.301 − 286 =
  27. 27.1013 − 982 =
  28. 28.75 − 35 =
  29. 29.317 − 284 =
  30. 30.97 − 77 =
  31. 31.205 − 182 =
  32. 32.87 − 58 =
  33. 33.1024 − 990 =
  34. 34.124 − 86 =
  35. 35.502 − 494 =
  36. 36.510 − 496 =
  37. 37.516 − 487 =
  38. 38.72 − 42 =
  39. 39.205 − 192 =
  40. 40.305 − 278 =

Answer key

  1. 9
  2. 41
  3. 32
  4. 34
  5. 28
  6. 13
  7. 53
  8. 27
  9. 32
  10. 22
  11. 13
  12. 27
  13. 12
  14. 35
  15. 50
  16. 23
  17. 35
  18. 40
  19. 26
  20. 26
  21. 13
  22. 26
  23. 46
  24. 38
  25. 26
  26. 15
  27. 31
  28. 40
  29. 33
  30. 20
  31. 23
  32. 29
  33. 34
  34. 38
  35. 8
  36. 14
  37. 29
  38. 30
  39. 13
  40. 27

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