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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 226 · 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. 1.97 − 78 =
  2. 2.72 − 34 =
  3. 3.208 − 196 =
  4. 4.318 − 279 =
  5. 5.89 − 74 =
  6. 6.214 − 188 =
  7. 7.505 − 489 =
  8. 8.83 − 75 =
  9. 9.106 − 93 =
  10. 10.528 − 481 =
  11. 11.1025 − 993 =
  12. 12.1003 − 996 =
  13. 13.127 − 79 =
  14. 14.92 − 72 =
  15. 15.223 − 192 =
  16. 16.81 − 66 =
  17. 17.324 − 283 =
  18. 18.93 − 72 =
  19. 19.1001 − 984 =
  20. 20.210 − 198 =
  21. 21.506 − 489 =
  22. 22.514 − 491 =
  23. 23.203 − 175 =
  24. 24.224 − 182 =
  25. 25.506 − 484 =
  26. 26.1027 − 988 =
  27. 27.77 − 45 =
  28. 28.63 − 27 =
  29. 29.105 − 83 =
  30. 30.59 − 39 =
  31. 31.1028 − 993 =
  32. 32.110 − 60 =
  33. 33.304 − 295 =
  34. 34.1001 − 997 =
  35. 35.127 − 91 =
  36. 36.1002 − 988 =
  37. 37.51 − 39 =
  38. 38.525 − 491 =
  39. 39.218 − 194 =
  40. 40.209 − 185 =

Answer key

  1. 19
  2. 38
  3. 12
  4. 39
  5. 15
  6. 26
  7. 16
  8. 8
  9. 13
  10. 47
  11. 32
  12. 7
  13. 48
  14. 20
  15. 31
  16. 15
  17. 41
  18. 21
  19. 17
  20. 12
  21. 17
  22. 23
  23. 28
  24. 42
  25. 22
  26. 39
  27. 32
  28. 36
  29. 22
  30. 20
  31. 35
  32. 50
  33. 9
  34. 4
  35. 36
  36. 14
  37. 12
  38. 34
  39. 24
  40. 24

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