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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 49 · 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. 1.316 − 279 =
  2. 2.109 − 98 =
  3. 3.1006 − 987 =
  4. 4.1020 − 977 =
  5. 5.1003 − 979 =
  6. 6.207 − 187 =
  7. 7.302 − 281 =
  8. 8.1003 − 998 =
  9. 9.1012 − 983 =
  10. 10.119 − 96 =
  11. 11.90 − 72 =
  12. 12.305 − 298 =
  13. 13.1020 − 978 =
  14. 14.1008 − 984 =
  15. 15.1009 − 987 =
  16. 16.81 − 76 =
  17. 17.72 − 27 =
  18. 18.52 − 29 =
  19. 19.63 − 35 =
  20. 20.1014 − 987 =
  21. 21.519 − 486 =
  22. 22.1013 − 987 =
  23. 23.116 − 88 =
  24. 24.514 − 495 =
  25. 25.102 − 92 =
  26. 26.305 − 290 =
  27. 27.68 − 28 =
  28. 28.1001 − 998 =
  29. 29.504 − 492 =
  30. 30.56 − 42 =
  31. 31.305 − 294 =
  32. 32.514 − 487 =
  33. 33.519 − 492 =
  34. 34.86 − 65 =
  35. 35.329 − 296 =
  36. 36.79 − 31 =
  37. 37.84 − 58 =
  38. 38.1024 − 978 =
  39. 39.1013 − 979 =
  40. 40.502 − 488 =

Answer key

  1. 37
  2. 11
  3. 19
  4. 43
  5. 24
  6. 20
  7. 21
  8. 5
  9. 29
  10. 23
  11. 18
  12. 7
  13. 42
  14. 24
  15. 22
  16. 5
  17. 45
  18. 23
  19. 28
  20. 27
  21. 33
  22. 26
  23. 28
  24. 19
  25. 10
  26. 15
  27. 40
  28. 3
  29. 12
  30. 14
  31. 11
  32. 27
  33. 27
  34. 21
  35. 33
  36. 48
  37. 26
  38. 46
  39. 34
  40. 14

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