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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 847 · 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. 1.75 − 44 =
  2. 2.502 − 495 =
  3. 3.105 − 76 =
  4. 4.1026 − 983 =
  5. 5.1012 − 987 =
  6. 6.217 − 176 =
  7. 7.227 − 180 =
  8. 8.123 − 87 =
  9. 9.92 − 72 =
  10. 10.78 − 34 =
  11. 11.101 − 77 =
  12. 12.314 − 283 =
  13. 13.106 − 69 =
  14. 14.507 − 486 =
  15. 15.95 − 58 =
  16. 16.1005 − 990 =
  17. 17.105 − 84 =
  18. 18.101 − 69 =
  19. 19.221 − 195 =
  20. 20.123 − 96 =
  21. 21.314 − 287 =
  22. 22.312 − 292 =
  23. 23.228 − 190 =
  24. 24.127 − 94 =
  25. 25.312 − 282 =
  26. 26.1024 − 997 =
  27. 27.512 − 481 =
  28. 28.54 − 29 =
  29. 29.1017 − 991 =
  30. 30.329 − 285 =
  31. 31.58 − 37 =
  32. 32.314 − 291 =
  33. 33.102 − 97 =
  34. 34.93 − 61 =
  35. 35.1002 − 985 =
  36. 36.329 − 288 =
  37. 37.214 − 185 =
  38. 38.121 − 96 =
  39. 39.203 − 179 =
  40. 40.119 − 93 =

Answer key

  1. 31
  2. 7
  3. 29
  4. 43
  5. 25
  6. 41
  7. 47
  8. 36
  9. 20
  10. 44
  11. 24
  12. 31
  13. 37
  14. 21
  15. 37
  16. 15
  17. 21
  18. 32
  19. 26
  20. 27
  21. 27
  22. 20
  23. 38
  24. 33
  25. 30
  26. 27
  27. 31
  28. 25
  29. 26
  30. 44
  31. 21
  32. 23
  33. 5
  34. 32
  35. 17
  36. 41
  37. 29
  38. 25
  39. 24
  40. 26

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