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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 212 · 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. 1.125 − 86 =
  2. 2.514 − 486 =
  3. 3.70 − 25 =
  4. 4.207 − 185 =
  5. 5.106 − 68 =
  6. 6.59 − 43 =
  7. 7.120 − 98 =
  8. 8.301 − 293 =
  9. 9.1011 − 994 =
  10. 10.204 − 175 =
  11. 11.110 − 86 =
  12. 12.108 − 94 =
  13. 13.1001 − 998 =
  14. 14.69 − 25 =
  15. 15.1012 − 986 =
  16. 16.116 − 92 =
  17. 17.1012 − 993 =
  18. 18.1001 − 981 =
  19. 19.88 − 65 =
  20. 20.1021 − 997 =
  21. 21.110 − 67 =
  22. 22.77 − 28 =
  23. 23.1025 − 994 =
  24. 24.305 − 286 =
  25. 25.218 − 195 =
  26. 26.504 − 476 =
  27. 27.97 − 58 =
  28. 28.309 − 275 =
  29. 29.111 − 79 =
  30. 30.219 − 181 =
  31. 31.308 − 280 =
  32. 32.86 − 77 =
  33. 33.505 − 498 =
  34. 34.65 − 28 =
  35. 35.124 − 87 =
  36. 36.105 − 84 =
  37. 37.121 − 78 =
  38. 38.85 − 66 =
  39. 39.204 − 184 =
  40. 40.213 − 190 =

Answer key

  1. 39
  2. 28
  3. 45
  4. 22
  5. 38
  6. 16
  7. 22
  8. 8
  9. 17
  10. 29
  11. 24
  12. 14
  13. 3
  14. 44
  15. 26
  16. 24
  17. 19
  18. 20
  19. 23
  20. 24
  21. 43
  22. 49
  23. 31
  24. 19
  25. 23
  26. 28
  27. 39
  28. 34
  29. 32
  30. 38
  31. 28
  32. 9
  33. 7
  34. 37
  35. 37
  36. 21
  37. 43
  38. 19
  39. 20
  40. 23

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