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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 760 · 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. 1.129 − 93 =
  2. 2.305 − 288 =
  3. 3.1023 − 985 =
  4. 4.72 − 42 =
  5. 5.205 − 176 =
  6. 6.325 − 289 =
  7. 7.67 − 32 =
  8. 8.514 − 481 =
  9. 9.314 − 283 =
  10. 10.99 − 61 =
  11. 11.302 − 294 =
  12. 12.1019 − 985 =
  13. 13.516 − 487 =
  14. 14.510 − 487 =
  15. 15.315 − 296 =
  16. 16.229 − 197 =
  17. 17.65 − 37 =
  18. 18.90 − 62 =
  19. 19.526 − 486 =
  20. 20.57 − 33 =
  21. 21.85 − 57 =
  22. 22.509 − 487 =
  23. 23.512 − 487 =
  24. 24.88 − 72 =
  25. 25.125 − 97 =
  26. 26.72 − 26 =
  27. 27.507 − 476 =
  28. 28.84 − 62 =
  29. 29.309 − 278 =
  30. 30.302 − 293 =
  31. 31.1010 − 996 =
  32. 32.108 − 67 =
  33. 33.1007 − 981 =
  34. 34.79 − 48 =
  35. 35.1004 − 993 =
  36. 36.105 − 67 =
  37. 37.502 − 481 =
  38. 38.90 − 58 =
  39. 39.80 − 47 =
  40. 40.125 − 83 =

Answer key

  1. 36
  2. 17
  3. 38
  4. 30
  5. 29
  6. 36
  7. 35
  8. 33
  9. 31
  10. 38
  11. 8
  12. 34
  13. 29
  14. 23
  15. 19
  16. 32
  17. 28
  18. 28
  19. 40
  20. 24
  21. 28
  22. 22
  23. 25
  24. 16
  25. 28
  26. 46
  27. 31
  28. 22
  29. 31
  30. 9
  31. 14
  32. 41
  33. 26
  34. 31
  35. 11
  36. 38
  37. 21
  38. 32
  39. 33
  40. 42

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