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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 567 · 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. 1.503 − 498 =
  2. 2.88 − 71 =
  3. 3.55 − 30 =
  4. 4.225 − 185 =
  5. 5.221 − 186 =
  6. 6.93 − 61 =
  7. 7.101 − 78 =
  8. 8.208 − 181 =
  9. 9.85 − 68 =
  10. 10.122 − 79 =
  11. 11.510 − 492 =
  12. 12.102 − 80 =
  13. 13.324 − 295 =
  14. 14.1010 − 989 =
  15. 15.94 − 69 =
  16. 16.217 − 182 =
  17. 17.222 − 184 =
  18. 18.63 − 44 =
  19. 19.1003 − 976 =
  20. 20.522 − 484 =
  21. 21.228 − 193 =
  22. 22.103 − 96 =
  23. 23.120 − 96 =
  24. 24.324 − 294 =
  25. 25.501 − 493 =
  26. 26.214 − 181 =
  27. 27.53 − 38 =
  28. 28.1021 − 979 =
  29. 29.1009 − 989 =
  30. 30.519 − 492 =
  31. 31.518 − 498 =
  32. 32.57 − 47 =
  33. 33.508 − 480 =
  34. 34.1007 − 991 =
  35. 35.1010 − 981 =
  36. 36.94 − 61 =
  37. 37.124 − 82 =
  38. 38.63 − 31 =
  39. 39.101 − 66 =
  40. 40.101 − 92 =

Answer key

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

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