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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 255 · 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. 1.517 − 497 =
  2. 2.69 − 32 =
  3. 3.90 − 57 =
  4. 4.210 − 189 =
  5. 5.323 − 278 =
  6. 6.1005 − 987 =
  7. 7.63 − 31 =
  8. 8.1018 − 986 =
  9. 9.318 − 286 =
  10. 10.104 − 97 =
  11. 11.129 − 81 =
  12. 12.520 − 497 =
  13. 13.526 − 493 =
  14. 14.1019 − 989 =
  15. 15.521 − 480 =
  16. 16.308 − 289 =
  17. 17.76 − 48 =
  18. 18.226 − 190 =
  19. 19.90 − 77 =
  20. 20.119 − 90 =
  21. 21.1015 − 998 =
  22. 22.329 − 285 =
  23. 23.77 − 43 =
  24. 24.1009 − 985 =
  25. 25.86 − 63 =
  26. 26.1027 − 982 =
  27. 27.526 − 491 =
  28. 28.502 − 487 =
  29. 29.71 − 45 =
  30. 30.229 − 191 =
  31. 31.317 − 295 =
  32. 32.513 − 496 =
  33. 33.94 − 68 =
  34. 34.70 − 31 =
  35. 35.75 − 29 =
  36. 36.104 − 62 =
  37. 37.205 − 190 =
  38. 38.319 − 278 =
  39. 39.215 − 195 =
  40. 40.1019 − 986 =

Answer key

  1. 20
  2. 37
  3. 33
  4. 21
  5. 45
  6. 18
  7. 32
  8. 32
  9. 32
  10. 7
  11. 48
  12. 23
  13. 33
  14. 30
  15. 41
  16. 19
  17. 28
  18. 36
  19. 13
  20. 29
  21. 17
  22. 44
  23. 34
  24. 24
  25. 23
  26. 45
  27. 35
  28. 15
  29. 26
  30. 38
  31. 22
  32. 17
  33. 26
  34. 39
  35. 46
  36. 42
  37. 15
  38. 41
  39. 20
  40. 33

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