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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 137 · 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. 1.506 − 483 =
  2. 2.98 − 68 =
  3. 3.226 − 180 =
  4. 4.110 − 92 =
  5. 5.318 − 287 =
  6. 6.209 − 191 =
  7. 7.52 − 35 =
  8. 8.203 − 196 =
  9. 9.100 − 58 =
  10. 10.1019 − 980 =
  11. 11.107 − 76 =
  12. 12.503 − 477 =
  13. 13.126 − 88 =
  14. 14.109 − 58 =
  15. 15.110 − 68 =
  16. 16.115 − 88 =
  17. 17.123 − 83 =
  18. 18.330 − 294 =
  19. 19.527 − 478 =
  20. 20.83 − 76 =
  21. 21.316 − 290 =
  22. 22.120 − 75 =
  23. 23.98 − 64 =
  24. 24.64 − 40 =
  25. 25.313 − 281 =
  26. 26.94 − 75 =
  27. 27.110 − 76 =
  28. 28.1006 − 978 =
  29. 29.58 − 46 =
  30. 30.1029 − 994 =
  31. 31.1029 − 982 =
  32. 32.205 − 197 =
  33. 33.89 − 64 =
  34. 34.328 − 289 =
  35. 35.125 − 80 =
  36. 36.318 − 290 =
  37. 37.104 − 92 =
  38. 38.213 − 177 =
  39. 39.1013 − 976 =
  40. 40.59 − 48 =

Answer key

  1. 23
  2. 30
  3. 46
  4. 18
  5. 31
  6. 18
  7. 17
  8. 7
  9. 42
  10. 39
  11. 31
  12. 26
  13. 38
  14. 51
  15. 42
  16. 27
  17. 40
  18. 36
  19. 49
  20. 7
  21. 26
  22. 45
  23. 34
  24. 24
  25. 32
  26. 19
  27. 34
  28. 28
  29. 12
  30. 35
  31. 47
  32. 8
  33. 25
  34. 39
  35. 45
  36. 28
  37. 12
  38. 36
  39. 37
  40. 11

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