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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 322 · 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. 1.53 − 43 =
  2. 2.205 − 180 =
  3. 3.109 − 75 =
  4. 4.520 − 484 =
  5. 5.1006 − 989 =
  6. 6.101 − 93 =
  7. 7.81 − 72 =
  8. 8.119 − 98 =
  9. 9.207 − 184 =
  10. 10.521 − 494 =
  11. 11.106 − 85 =
  12. 12.76 − 26 =
  13. 13.123 − 79 =
  14. 14.524 − 494 =
  15. 15.81 − 73 =
  16. 16.64 − 28 =
  17. 17.93 − 75 =
  18. 18.1024 − 994 =
  19. 19.80 − 46 =
  20. 20.317 − 283 =
  21. 21.213 − 179 =
  22. 22.55 − 30 =
  23. 23.88 − 57 =
  24. 24.129 − 88 =
  25. 25.92 − 67 =
  26. 26.204 − 188 =
  27. 27.1012 − 993 =
  28. 28.112 − 98 =
  29. 29.85 − 78 =
  30. 30.76 − 41 =
  31. 31.504 − 486 =
  32. 32.1007 − 983 =
  33. 33.118 − 97 =
  34. 34.104 − 94 =
  35. 35.85 − 73 =
  36. 36.84 − 75 =
  37. 37.113 − 89 =
  38. 38.66 − 36 =
  39. 39.1019 − 984 =
  40. 40.116 − 98 =

Answer key

  1. 10
  2. 25
  3. 34
  4. 36
  5. 17
  6. 8
  7. 9
  8. 21
  9. 23
  10. 27
  11. 21
  12. 50
  13. 44
  14. 30
  15. 8
  16. 36
  17. 18
  18. 30
  19. 34
  20. 34
  21. 34
  22. 25
  23. 31
  24. 41
  25. 25
  26. 16
  27. 19
  28. 14
  29. 7
  30. 35
  31. 18
  32. 24
  33. 21
  34. 10
  35. 12
  36. 9
  37. 24
  38. 30
  39. 35
  40. 18

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