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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 484 · 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. 1.1026 − 984 =
  2. 2.1022 − 983 =
  3. 3.1029 − 982 =
  4. 4.225 − 193 =
  5. 5.84 − 76 =
  6. 6.309 − 286 =
  7. 7.521 − 492 =
  8. 8.221 − 189 =
  9. 9.110 − 57 =
  10. 10.323 − 278 =
  11. 11.58 − 44 =
  12. 12.1027 − 988 =
  13. 13.507 − 487 =
  14. 14.119 − 94 =
  15. 15.1027 − 984 =
  16. 16.225 − 175 =
  17. 17.228 − 182 =
  18. 18.101 − 88 =
  19. 19.314 − 279 =
  20. 20.505 − 477 =
  21. 21.306 − 279 =
  22. 22.102 − 60 =
  23. 23.65 − 25 =
  24. 24.56 − 44 =
  25. 25.95 − 65 =
  26. 26.64 − 34 =
  27. 27.104 − 63 =
  28. 28.102 − 82 =
  29. 29.96 − 66 =
  30. 30.1003 − 994 =
  31. 31.503 − 493 =
  32. 32.202 − 180 =
  33. 33.110 − 61 =
  34. 34.1013 − 993 =
  35. 35.102 − 86 =
  36. 36.54 − 43 =
  37. 37.125 − 91 =
  38. 38.1005 − 994 =
  39. 39.313 − 291 =
  40. 40.207 − 196 =

Answer key

  1. 42
  2. 39
  3. 47
  4. 32
  5. 8
  6. 23
  7. 29
  8. 32
  9. 53
  10. 45
  11. 14
  12. 39
  13. 20
  14. 25
  15. 43
  16. 50
  17. 46
  18. 13
  19. 35
  20. 28
  21. 27
  22. 42
  23. 40
  24. 12
  25. 30
  26. 30
  27. 41
  28. 20
  29. 30
  30. 9
  31. 10
  32. 22
  33. 49
  34. 20
  35. 16
  36. 11
  37. 34
  38. 11
  39. 22
  40. 11

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