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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 710 · 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. 1.505 − 497 =
  2. 2.519 − 475 =
  3. 3.104 − 71 =
  4. 4.503 − 480 =
  5. 5.1011 − 987 =
  6. 6.119 − 76 =
  7. 7.1016 − 989 =
  8. 8.54 − 43 =
  9. 9.83 − 66 =
  10. 10.107 − 74 =
  11. 11.104 − 60 =
  12. 12.1008 − 985 =
  13. 13.60 − 25 =
  14. 14.108 − 66 =
  15. 15.1025 − 984 =
  16. 16.117 − 78 =
  17. 17.309 − 293 =
  18. 18.1012 − 998 =
  19. 19.213 − 195 =
  20. 20.97 − 69 =
  21. 21.65 − 40 =
  22. 22.510 − 494 =
  23. 23.115 − 79 =
  24. 24.86 − 73 =
  25. 25.1010 − 993 =
  26. 26.59 − 29 =
  27. 27.103 − 78 =
  28. 28.304 − 288 =
  29. 29.57 − 30 =
  30. 30.209 − 190 =
  31. 31.304 − 291 =
  32. 32.1002 − 986 =
  33. 33.212 − 176 =
  34. 34.85 − 72 =
  35. 35.99 − 61 =
  36. 36.1027 − 987 =
  37. 37.103 − 97 =
  38. 38.105 − 60 =
  39. 39.1026 − 982 =
  40. 40.77 − 45 =

Answer key

  1. 8
  2. 44
  3. 33
  4. 23
  5. 24
  6. 43
  7. 27
  8. 11
  9. 17
  10. 33
  11. 44
  12. 23
  13. 35
  14. 42
  15. 41
  16. 39
  17. 16
  18. 14
  19. 18
  20. 28
  21. 25
  22. 16
  23. 36
  24. 13
  25. 17
  26. 30
  27. 25
  28. 16
  29. 27
  30. 19
  31. 13
  32. 16
  33. 36
  34. 13
  35. 38
  36. 40
  37. 6
  38. 45
  39. 44
  40. 32

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