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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 293 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.184.8 ÷ 10 =
  2. 2.33.69 ÷ 10 =
  3. 3.17.79 ÷ 100 =
  4. 4.20.21 × 10 =
  5. 5.94.2 × 100 =
  6. 6.299.1 ÷ 1000 =
  7. 7.262.5 × 10 =
  8. 8.69.8 × 100 =
  9. 9.338.5 × 1000 =
  10. 10.20.88 × 10 =
  11. 11.74.2 ÷ 1000 =
  12. 12.38.81 × 10 =
  13. 13.243.1 × 1000 =
  14. 14.3.06 ÷ 10 =
  15. 15.12.96 ÷ 1000 =
  16. 16.24.66 ÷ 10 =
  17. 17.336.3 ÷ 10 =
  18. 18.130.6 × 1000 =
  19. 19.39.56 × 100 =
  20. 20.37.8 ÷ 100 =
  21. 21.405.3 × 100 =
  22. 22.32.64 × 1000 =
  23. 23.490.1 × 1000 =
  24. 24.455.4 ÷ 1000 =
  25. 25.470.1 × 100 =
  26. 26.1.92 × 1000 =
  27. 27.74.5 ÷ 10 =
  28. 28.15.8 ÷ 1000 =
  29. 29.178.9 × 100 =
  30. 30.373.8 ÷ 1000 =
  31. 31.132.3 ÷ 1000 =
  32. 32.196.9 × 1000 =
  33. 33.40.01 ÷ 100 =
  34. 34.18.31 ÷ 10 =
  35. 35.38.56 × 1000 =
  36. 36.461.8 × 1000 =
  37. 37.121.6 × 10 =
  38. 38.38.61 ÷ 1000 =
  39. 39.14.32 ÷ 1000 =
  40. 40.3.61 × 10 =

Answer key

  1. 18.48
  2. 3.369
  3. 0.1779
  4. 202.1
  5. 9420
  6. 0.2991
  7. 2625
  8. 6980
  9. 338500
  10. 208.8
  11. 0.0742
  12. 388.1
  13. 243100
  14. 0.306
  15. 0.01296
  16. 2.466
  17. 33.63
  18. 130600
  19. 3956
  20. 0.378
  21. 40530
  22. 32640
  23. 490100
  24. 0.4554
  25. 47010
  26. 1920
  27. 7.45
  28. 0.0158
  29. 17890
  30. 0.3738
  31. 0.1323
  32. 196900
  33. 0.4001
  34. 1.831
  35. 38560
  36. 461800
  37. 1216
  38. 0.03861
  39. 0.01432
  40. 36.1

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