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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 937 · 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. 1.224 − 184 =
  2. 2.108 − 75 =
  3. 3.530 − 491 =
  4. 4.64 − 29 =
  5. 5.1027 − 993 =
  6. 6.1027 − 995 =
  7. 7.1025 − 975 =
  8. 8.503 − 491 =
  9. 9.527 − 485 =
  10. 10.221 − 196 =
  11. 11.1006 − 990 =
  12. 12.120 − 82 =
  13. 13.520 − 481 =
  14. 14.102 − 96 =
  15. 15.68 − 35 =
  16. 16.78 − 27 =
  17. 17.126 − 94 =
  18. 18.73 − 45 =
  19. 19.530 − 483 =
  20. 20.323 − 293 =
  21. 21.517 − 497 =
  22. 22.1001 − 991 =
  23. 23.1007 − 996 =
  24. 24.324 − 283 =
  25. 25.207 − 189 =
  26. 26.1023 − 993 =
  27. 27.206 − 180 =
  28. 28.108 − 78 =
  29. 29.64 − 43 =
  30. 30.328 − 292 =
  31. 31.105 − 91 =
  32. 32.107 − 87 =
  33. 33.108 − 77 =
  34. 34.85 − 78 =
  35. 35.79 − 47 =
  36. 36.525 − 497 =
  37. 37.75 − 37 =
  38. 38.87 − 61 =
  39. 39.106 − 73 =
  40. 40.1016 − 998 =

Answer key

  1. 40
  2. 33
  3. 39
  4. 35
  5. 34
  6. 32
  7. 50
  8. 12
  9. 42
  10. 25
  11. 16
  12. 38
  13. 39
  14. 6
  15. 33
  16. 51
  17. 32
  18. 28
  19. 47
  20. 30
  21. 20
  22. 10
  23. 11
  24. 41
  25. 18
  26. 30
  27. 26
  28. 30
  29. 21
  30. 36
  31. 14
  32. 20
  33. 31
  34. 7
  35. 32
  36. 28
  37. 38
  38. 26
  39. 33
  40. 18

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