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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 601 · 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. 1.521 − 493 =
  2. 2.105 − 78 =
  3. 3.503 − 481 =
  4. 4.60 − 45 =
  5. 5.1027 − 983 =
  6. 6.81 − 78 =
  7. 7.74 − 41 =
  8. 8.508 − 479 =
  9. 9.518 − 479 =
  10. 10.125 − 85 =
  11. 11.79 − 36 =
  12. 12.301 − 296 =
  13. 13.514 − 481 =
  14. 14.1018 − 998 =
  15. 15.1005 − 983 =
  16. 16.61 − 41 =
  17. 17.1028 − 981 =
  18. 18.322 − 279 =
  19. 19.95 − 75 =
  20. 20.55 − 46 =
  21. 21.128 − 94 =
  22. 22.60 − 44 =
  23. 23.94 − 61 =
  24. 24.502 − 493 =
  25. 25.65 − 32 =
  26. 26.53 − 39 =
  27. 27.117 − 93 =
  28. 28.302 − 287 =
  29. 29.130 − 88 =
  30. 30.225 − 195 =
  31. 31.1027 − 990 =
  32. 32.81 − 56 =
  33. 33.98 − 56 =
  34. 34.504 − 493 =
  35. 35.99 − 56 =
  36. 36.60 − 41 =
  37. 37.62 − 44 =
  38. 38.91 − 78 =
  39. 39.303 − 287 =
  40. 40.302 − 284 =

Answer key

  1. 28
  2. 27
  3. 22
  4. 15
  5. 44
  6. 3
  7. 33
  8. 29
  9. 39
  10. 40
  11. 43
  12. 5
  13. 33
  14. 20
  15. 22
  16. 20
  17. 47
  18. 43
  19. 20
  20. 9
  21. 34
  22. 16
  23. 33
  24. 9
  25. 33
  26. 14
  27. 24
  28. 15
  29. 42
  30. 30
  31. 37
  32. 25
  33. 42
  34. 11
  35. 43
  36. 19
  37. 18
  38. 13
  39. 16
  40. 18

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