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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 698 · 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. 1.70 − 47 =
  2. 2.97 − 76 =
  3. 3.105 − 61 =
  4. 4.104 − 98 =
  5. 5.1011 − 989 =
  6. 6.207 − 183 =
  7. 7.58 − 43 =
  8. 8.1014 − 982 =
  9. 9.221 − 175 =
  10. 10.83 − 72 =
  11. 11.222 − 192 =
  12. 12.52 − 43 =
  13. 13.302 − 275 =
  14. 14.304 − 275 =
  15. 15.1006 − 992 =
  16. 16.64 − 37 =
  17. 17.227 − 182 =
  18. 18.1018 − 998 =
  19. 19.74 − 47 =
  20. 20.66 − 31 =
  21. 21.305 − 278 =
  22. 22.505 − 477 =
  23. 23.1016 − 983 =
  24. 24.229 − 187 =
  25. 25.107 − 87 =
  26. 26.225 − 191 =
  27. 27.518 − 485 =
  28. 28.310 − 296 =
  29. 29.507 − 486 =
  30. 30.521 − 476 =
  31. 31.316 − 295 =
  32. 32.87 − 57 =
  33. 33.120 − 81 =
  34. 34.304 − 288 =
  35. 35.119 − 78 =
  36. 36.520 − 495 =
  37. 37.1020 − 975 =
  38. 38.1027 − 982 =
  39. 39.115 − 91 =
  40. 40.302 − 297 =

Answer key

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

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