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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 372 · 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. 1.303 − 296 =
  2. 2.1014 − 979 =
  3. 3.1002 − 984 =
  4. 4.227 − 190 =
  5. 5.104 − 95 =
  6. 6.1003 − 998 =
  7. 7.65 − 43 =
  8. 8.119 − 90 =
  9. 9.93 − 73 =
  10. 10.502 − 482 =
  11. 11.105 − 60 =
  12. 12.72 − 40 =
  13. 13.1010 − 978 =
  14. 14.522 − 492 =
  15. 15.515 − 493 =
  16. 16.90 − 70 =
  17. 17.92 − 73 =
  18. 18.514 − 497 =
  19. 19.100 − 64 =
  20. 20.525 − 493 =
  21. 21.226 − 193 =
  22. 22.80 − 38 =
  23. 23.112 − 97 =
  24. 24.306 − 284 =
  25. 25.1023 − 986 =
  26. 26.96 − 73 =
  27. 27.1027 − 977 =
  28. 28.80 − 39 =
  29. 29.72 − 29 =
  30. 30.1021 − 976 =
  31. 31.520 − 489 =
  32. 32.320 − 297 =
  33. 33.95 − 66 =
  34. 34.58 − 33 =
  35. 35.104 − 80 =
  36. 36.91 − 57 =
  37. 37.308 − 288 =
  38. 38.130 − 76 =
  39. 39.1009 − 976 =
  40. 40.224 − 196 =

Answer key

  1. 7
  2. 35
  3. 18
  4. 37
  5. 9
  6. 5
  7. 22
  8. 29
  9. 20
  10. 20
  11. 45
  12. 32
  13. 32
  14. 30
  15. 22
  16. 20
  17. 19
  18. 17
  19. 36
  20. 32
  21. 33
  22. 42
  23. 15
  24. 22
  25. 37
  26. 23
  27. 50
  28. 41
  29. 43
  30. 45
  31. 31
  32. 23
  33. 29
  34. 25
  35. 24
  36. 34
  37. 20
  38. 54
  39. 33
  40. 28

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