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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 766 · 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. 1.1015 − 985 =
  2. 2.109 − 75 =
  3. 3.79 − 36 =
  4. 4.206 − 179 =
  5. 5.81 − 62 =
  6. 6.76 − 46 =
  7. 7.93 − 62 =
  8. 8.517 − 484 =
  9. 9.102 − 77 =
  10. 10.111 − 97 =
  11. 11.514 − 484 =
  12. 12.323 − 276 =
  13. 13.302 − 296 =
  14. 14.80 − 40 =
  15. 15.511 − 491 =
  16. 16.98 − 76 =
  17. 17.1030 − 991 =
  18. 18.508 − 483 =
  19. 19.67 − 42 =
  20. 20.92 − 69 =
  21. 21.203 − 181 =
  22. 22.228 − 193 =
  23. 23.514 − 476 =
  24. 24.517 − 497 =
  25. 25.96 − 76 =
  26. 26.327 − 293 =
  27. 27.66 − 44 =
  28. 28.85 − 68 =
  29. 29.1021 − 987 =
  30. 30.127 − 83 =
  31. 31.326 − 291 =
  32. 32.217 − 178 =
  33. 33.118 − 87 =
  34. 34.322 − 284 =
  35. 35.62 − 32 =
  36. 36.309 − 296 =
  37. 37.227 − 184 =
  38. 38.507 − 493 =
  39. 39.207 − 194 =
  40. 40.1024 − 993 =

Answer key

  1. 30
  2. 34
  3. 43
  4. 27
  5. 19
  6. 30
  7. 31
  8. 33
  9. 25
  10. 14
  11. 30
  12. 47
  13. 6
  14. 40
  15. 20
  16. 22
  17. 39
  18. 25
  19. 25
  20. 23
  21. 22
  22. 35
  23. 38
  24. 20
  25. 20
  26. 34
  27. 22
  28. 17
  29. 34
  30. 44
  31. 35
  32. 39
  33. 31
  34. 38
  35. 30
  36. 13
  37. 43
  38. 14
  39. 13
  40. 31

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