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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 160 · 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. 1.529 − 489 =
  2. 2.306 − 296 =
  3. 3.66 − 30 =
  4. 4.228 − 182 =
  5. 5.68 − 26 =
  6. 6.1012 − 985 =
  7. 7.329 − 281 =
  8. 8.106 − 96 =
  9. 9.57 − 25 =
  10. 10.56 − 29 =
  11. 11.330 − 295 =
  12. 12.503 − 484 =
  13. 13.305 − 298 =
  14. 14.308 − 295 =
  15. 15.528 − 487 =
  16. 16.507 − 477 =
  17. 17.307 − 291 =
  18. 18.1007 − 993 =
  19. 19.224 − 186 =
  20. 20.52 − 27 =
  21. 21.115 − 97 =
  22. 22.125 − 85 =
  23. 23.88 − 66 =
  24. 24.323 − 290 =
  25. 25.203 − 198 =
  26. 26.520 − 476 =
  27. 27.510 − 489 =
  28. 28.1028 − 997 =
  29. 29.104 − 82 =
  30. 30.1024 − 991 =
  31. 31.68 − 31 =
  32. 32.316 − 291 =
  33. 33.105 − 93 =
  34. 34.215 − 178 =
  35. 35.507 − 495 =
  36. 36.1017 − 988 =
  37. 37.207 − 178 =
  38. 38.208 − 192 =
  39. 39.99 − 74 =
  40. 40.66 − 38 =

Answer key

  1. 40
  2. 10
  3. 36
  4. 46
  5. 42
  6. 27
  7. 48
  8. 10
  9. 32
  10. 27
  11. 35
  12. 19
  13. 7
  14. 13
  15. 41
  16. 30
  17. 16
  18. 14
  19. 38
  20. 25
  21. 18
  22. 40
  23. 22
  24. 33
  25. 5
  26. 44
  27. 21
  28. 31
  29. 22
  30. 33
  31. 37
  32. 25
  33. 12
  34. 37
  35. 12
  36. 29
  37. 29
  38. 16
  39. 25
  40. 28

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