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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 199 · 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. 1.513 − 477 =
  2. 2.219 − 175 =
  3. 3.1005 − 976 =
  4. 4.320 − 282 =
  5. 5.225 − 183 =
  6. 6.83 − 74 =
  7. 7.1026 − 991 =
  8. 8.70 − 43 =
  9. 9.1015 − 988 =
  10. 10.228 − 186 =
  11. 11.514 − 479 =
  12. 12.117 − 88 =
  13. 13.302 − 284 =
  14. 14.1018 − 988 =
  15. 15.529 − 498 =
  16. 16.84 − 73 =
  17. 17.102 − 91 =
  18. 18.301 − 286 =
  19. 19.85 − 68 =
  20. 20.1015 − 977 =
  21. 21.113 − 77 =
  22. 22.523 − 496 =
  23. 23.1001 − 981 =
  24. 24.206 − 187 =
  25. 25.112 − 94 =
  26. 26.519 − 492 =
  27. 27.326 − 279 =
  28. 28.1007 − 987 =
  29. 29.1021 − 979 =
  30. 30.313 − 276 =
  31. 31.522 − 493 =
  32. 32.522 − 478 =
  33. 33.112 − 98 =
  34. 34.109 − 79 =
  35. 35.67 − 39 =
  36. 36.90 − 75 =
  37. 37.518 − 483 =
  38. 38.206 − 188 =
  39. 39.57 − 29 =
  40. 40.325 − 294 =

Answer key

  1. 36
  2. 44
  3. 29
  4. 38
  5. 42
  6. 9
  7. 35
  8. 27
  9. 27
  10. 42
  11. 35
  12. 29
  13. 18
  14. 30
  15. 31
  16. 11
  17. 11
  18. 15
  19. 17
  20. 38
  21. 36
  22. 27
  23. 20
  24. 19
  25. 18
  26. 27
  27. 47
  28. 20
  29. 42
  30. 37
  31. 29
  32. 44
  33. 14
  34. 30
  35. 28
  36. 15
  37. 35
  38. 18
  39. 28
  40. 31

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