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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 357 · 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. 1.502 − 482 =
  2. 2.83 − 77 =
  3. 3.322 − 288 =
  4. 4.67 − 32 =
  5. 5.529 − 486 =
  6. 6.122 − 97 =
  7. 7.327 − 287 =
  8. 8.206 − 181 =
  9. 9.1005 − 992 =
  10. 10.127 − 92 =
  11. 11.119 − 89 =
  12. 12.95 − 69 =
  13. 13.55 − 47 =
  14. 14.59 − 48 =
  15. 15.225 − 184 =
  16. 16.301 − 293 =
  17. 17.51 − 30 =
  18. 18.87 − 59 =
  19. 19.310 − 284 =
  20. 20.221 − 198 =
  21. 21.213 − 194 =
  22. 22.1016 − 988 =
  23. 23.104 − 64 =
  24. 24.1012 − 982 =
  25. 25.102 − 98 =
  26. 26.507 − 497 =
  27. 27.215 − 188 =
  28. 28.1016 − 998 =
  29. 29.510 − 496 =
  30. 30.60 − 48 =
  31. 31.87 − 65 =
  32. 32.114 − 88 =
  33. 33.105 − 81 =
  34. 34.78 − 43 =
  35. 35.53 − 44 =
  36. 36.322 − 297 =
  37. 37.85 − 59 =
  38. 38.229 − 181 =
  39. 39.128 − 93 =
  40. 40.504 − 485 =

Answer key

  1. 20
  2. 6
  3. 34
  4. 35
  5. 43
  6. 25
  7. 40
  8. 25
  9. 13
  10. 35
  11. 30
  12. 26
  13. 8
  14. 11
  15. 41
  16. 8
  17. 21
  18. 28
  19. 26
  20. 23
  21. 19
  22. 28
  23. 40
  24. 30
  25. 4
  26. 10
  27. 27
  28. 18
  29. 14
  30. 12
  31. 22
  32. 26
  33. 24
  34. 35
  35. 9
  36. 25
  37. 26
  38. 48
  39. 35
  40. 19

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