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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 611 · 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. 1.312 − 293 =
  2. 2.326 − 294 =
  3. 3.72 − 37 =
  4. 4.89 − 69 =
  5. 5.306 − 291 =
  6. 6.311 − 294 =
  7. 7.523 − 478 =
  8. 8.65 − 34 =
  9. 9.65 − 39 =
  10. 10.76 − 38 =
  11. 11.52 − 48 =
  12. 12.314 − 276 =
  13. 13.56 − 34 =
  14. 14.68 − 39 =
  15. 15.74 − 38 =
  16. 16.64 − 45 =
  17. 17.109 − 76 =
  18. 18.122 − 96 =
  19. 19.202 − 177 =
  20. 20.1029 − 982 =
  21. 21.89 − 58 =
  22. 22.79 − 28 =
  23. 23.128 − 96 =
  24. 24.1004 − 990 =
  25. 25.78 − 36 =
  26. 26.308 − 284 =
  27. 27.503 − 495 =
  28. 28.118 − 80 =
  29. 29.312 − 292 =
  30. 30.1005 − 991 =
  31. 31.117 − 82 =
  32. 32.109 − 73 =
  33. 33.527 − 489 =
  34. 34.204 − 193 =
  35. 35.63 − 40 =
  36. 36.1010 − 987 =
  37. 37.1020 − 988 =
  38. 38.74 − 42 =
  39. 39.316 − 293 =
  40. 40.516 − 491 =

Answer key

  1. 19
  2. 32
  3. 35
  4. 20
  5. 15
  6. 17
  7. 45
  8. 31
  9. 26
  10. 38
  11. 4
  12. 38
  13. 22
  14. 29
  15. 36
  16. 19
  17. 33
  18. 26
  19. 25
  20. 47
  21. 31
  22. 51
  23. 32
  24. 14
  25. 42
  26. 24
  27. 8
  28. 38
  29. 20
  30. 14
  31. 35
  32. 36
  33. 38
  34. 11
  35. 23
  36. 23
  37. 32
  38. 32
  39. 23
  40. 25

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