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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 894 · 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. 1.526 − 481 =
  2. 2.104 − 69 =
  3. 3.503 − 495 =
  4. 4.518 − 481 =
  5. 5.55 − 43 =
  6. 6.1009 − 988 =
  7. 7.59 − 31 =
  8. 8.79 − 25 =
  9. 9.215 − 179 =
  10. 10.85 − 73 =
  11. 11.103 − 75 =
  12. 12.110 − 77 =
  13. 13.55 − 40 =
  14. 14.517 − 490 =
  15. 15.109 − 91 =
  16. 16.106 − 77 =
  17. 17.1026 − 985 =
  18. 18.51 − 31 =
  19. 19.96 − 55 =
  20. 20.1019 − 998 =
  21. 21.83 − 78 =
  22. 22.56 − 29 =
  23. 23.303 − 291 =
  24. 24.306 − 278 =
  25. 25.1015 − 981 =
  26. 26.324 − 288 =
  27. 27.73 − 42 =
  28. 28.226 − 198 =
  29. 29.318 − 285 =
  30. 30.521 − 484 =
  31. 31.64 − 42 =
  32. 32.51 − 25 =
  33. 33.1011 − 989 =
  34. 34.51 − 45 =
  35. 35.1012 − 982 =
  36. 36.308 − 297 =
  37. 37.323 − 284 =
  38. 38.119 − 80 =
  39. 39.79 − 29 =
  40. 40.230 − 180 =

Answer key

  1. 45
  2. 35
  3. 8
  4. 37
  5. 12
  6. 21
  7. 28
  8. 54
  9. 36
  10. 12
  11. 28
  12. 33
  13. 15
  14. 27
  15. 18
  16. 29
  17. 41
  18. 20
  19. 41
  20. 21
  21. 5
  22. 27
  23. 12
  24. 28
  25. 34
  26. 36
  27. 31
  28. 28
  29. 33
  30. 37
  31. 22
  32. 26
  33. 22
  34. 6
  35. 30
  36. 11
  37. 39
  38. 39
  39. 50
  40. 50

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