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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 782 · 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. 1.1020 − 982 =
  2. 2.508 − 480 =
  3. 3.304 − 278 =
  4. 4.223 − 175 =
  5. 5.102 − 93 =
  6. 6.1012 − 978 =
  7. 7.89 − 69 =
  8. 8.205 − 189 =
  9. 9.1026 − 976 =
  10. 10.214 − 189 =
  11. 11.203 − 182 =
  12. 12.524 − 490 =
  13. 13.56 − 47 =
  14. 14.303 − 293 =
  15. 15.307 − 284 =
  16. 16.115 − 89 =
  17. 17.305 − 286 =
  18. 18.502 − 486 =
  19. 19.61 − 38 =
  20. 20.325 − 289 =
  21. 21.208 − 195 =
  22. 22.219 − 194 =
  23. 23.318 − 278 =
  24. 24.54 − 43 =
  25. 25.1001 − 980 =
  26. 26.1030 − 983 =
  27. 27.1018 − 992 =
  28. 28.1028 − 981 =
  29. 29.1023 − 998 =
  30. 30.82 − 68 =
  31. 31.214 − 184 =
  32. 32.215 − 180 =
  33. 33.89 − 65 =
  34. 34.218 − 177 =
  35. 35.309 − 280 =
  36. 36.100 − 78 =
  37. 37.226 − 186 =
  38. 38.515 − 481 =
  39. 39.109 − 60 =
  40. 40.518 − 496 =

Answer key

  1. 38
  2. 28
  3. 26
  4. 48
  5. 9
  6. 34
  7. 20
  8. 16
  9. 50
  10. 25
  11. 21
  12. 34
  13. 9
  14. 10
  15. 23
  16. 26
  17. 19
  18. 16
  19. 23
  20. 36
  21. 13
  22. 25
  23. 40
  24. 11
  25. 21
  26. 47
  27. 26
  28. 47
  29. 25
  30. 14
  31. 30
  32. 35
  33. 24
  34. 41
  35. 29
  36. 22
  37. 40
  38. 34
  39. 49
  40. 22

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