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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 305 · 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. 1.109 − 57 =
  2. 2.1024 − 987 =
  3. 3.504 − 498 =
  4. 4.81 − 65 =
  5. 5.65 − 39 =
  6. 6.122 − 93 =
  7. 7.107 − 57 =
  8. 8.102 − 57 =
  9. 9.85 − 74 =
  10. 10.55 − 27 =
  11. 11.227 − 193 =
  12. 12.211 − 190 =
  13. 13.1025 − 979 =
  14. 14.123 − 93 =
  15. 15.130 − 87 =
  16. 16.515 − 481 =
  17. 17.219 − 197 =
  18. 18.108 − 60 =
  19. 19.320 − 283 =
  20. 20.328 − 296 =
  21. 21.225 − 187 =
  22. 22.330 − 276 =
  23. 23.53 − 45 =
  24. 24.1016 − 979 =
  25. 25.503 − 480 =
  26. 26.224 − 190 =
  27. 27.106 − 88 =
  28. 28.1022 − 991 =
  29. 29.1003 − 980 =
  30. 30.117 − 97 =
  31. 31.1028 − 976 =
  32. 32.128 − 87 =
  33. 33.1001 − 987 =
  34. 34.129 − 96 =
  35. 35.329 − 291 =
  36. 36.1024 − 979 =
  37. 37.524 − 490 =
  38. 38.516 − 493 =
  39. 39.105 − 76 =
  40. 40.87 − 55 =

Answer key

  1. 52
  2. 37
  3. 6
  4. 16
  5. 26
  6. 29
  7. 50
  8. 45
  9. 11
  10. 28
  11. 34
  12. 21
  13. 46
  14. 30
  15. 43
  16. 34
  17. 22
  18. 48
  19. 37
  20. 32
  21. 38
  22. 54
  23. 8
  24. 37
  25. 23
  26. 34
  27. 18
  28. 31
  29. 23
  30. 20
  31. 52
  32. 41
  33. 14
  34. 33
  35. 38
  36. 45
  37. 34
  38. 23
  39. 29
  40. 32

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