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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 264 · 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. 1.301 − 279 =
  2. 2.520 − 492 =
  3. 3.522 − 485 =
  4. 4.102 − 59 =
  5. 5.77 − 31 =
  6. 6.117 − 85 =
  7. 7.315 − 290 =
  8. 8.213 − 185 =
  9. 9.86 − 78 =
  10. 10.530 − 491 =
  11. 11.316 − 298 =
  12. 12.203 − 184 =
  13. 13.105 − 75 =
  14. 14.221 − 194 =
  15. 15.101 − 61 =
  16. 16.227 − 197 =
  17. 17.226 − 185 =
  18. 18.108 − 70 =
  19. 19.77 − 28 =
  20. 20.225 − 191 =
  21. 21.89 − 77 =
  22. 22.52 − 31 =
  23. 23.1011 − 980 =
  24. 24.329 − 278 =
  25. 25.60 − 40 =
  26. 26.107 − 82 =
  27. 27.508 − 493 =
  28. 28.1014 − 998 =
  29. 29.528 − 483 =
  30. 30.1005 − 986 =
  31. 31.203 − 195 =
  32. 32.59 − 46 =
  33. 33.108 − 87 =
  34. 34.525 − 496 =
  35. 35.114 − 76 =
  36. 36.1027 − 988 =
  37. 37.93 − 67 =
  38. 38.328 − 280 =
  39. 39.308 − 287 =
  40. 40.505 − 490 =

Answer key

  1. 22
  2. 28
  3. 37
  4. 43
  5. 46
  6. 32
  7. 25
  8. 28
  9. 8
  10. 39
  11. 18
  12. 19
  13. 30
  14. 27
  15. 40
  16. 30
  17. 41
  18. 38
  19. 49
  20. 34
  21. 12
  22. 21
  23. 31
  24. 51
  25. 20
  26. 25
  27. 15
  28. 16
  29. 45
  30. 19
  31. 8
  32. 13
  33. 21
  34. 29
  35. 38
  36. 39
  37. 26
  38. 48
  39. 21
  40. 15

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