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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 650 · 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. 1.10.44 × 100 =
  2. 2.22.49 × 10 =
  3. 3.37.17 × 1000 =
  4. 4.153.5 ÷ 100 =
  5. 5.493.7 × 10 =
  6. 6.2.5 ÷ 1000 =
  7. 7.498.4 ÷ 10 =
  8. 8.14.68 × 100 =
  9. 9.6.12 × 100 =
  10. 10.315.2 × 10 =
  11. 11.7.33 × 100 =
  12. 12.242.7 ÷ 100 =
  13. 13.34.78 ÷ 10 =
  14. 14.30.41 ÷ 10 =
  15. 15.35.61 ÷ 1000 =
  16. 16.27.88 × 1000 =
  17. 17.44.59 × 10 =
  18. 18.13.13 × 100 =
  19. 19.36.33 × 10 =
  20. 20.212.7 × 10 =
  21. 21.4.31 ÷ 10 =
  22. 22.410.5 × 1000 =
  23. 23.50.4 × 10 =
  24. 24.43.72 ÷ 100 =
  25. 25.5.97 ÷ 10 =
  26. 26.38.46 × 100 =
  27. 27.26.48 × 1000 =
  28. 28.25.16 ÷ 1000 =
  29. 29.44.38 ÷ 1000 =
  30. 30.435.1 × 10 =
  31. 31.269.6 × 10 =
  32. 32.51.3 × 10 =
  33. 33.437.5 ÷ 10 =
  34. 34.24.31 ÷ 1000 =
  35. 35.18.88 ÷ 10 =
  36. 36.499.1 × 10 =
  37. 37.1.53 × 1000 =
  38. 38.37.43 × 100 =
  39. 39.17.96 × 10 =
  40. 40.424.4 × 1000 =

Answer key

  1. 1044
  2. 224.9
  3. 37170
  4. 1.535
  5. 4937
  6. 0.0025
  7. 49.84
  8. 1468
  9. 612
  10. 3152
  11. 733
  12. 2.427
  13. 3.478
  14. 3.041
  15. 0.03561
  16. 27880
  17. 445.9
  18. 1313
  19. 363.3
  20. 2127
  21. 0.431
  22. 410500
  23. 504
  24. 0.4372
  25. 0.597
  26. 3846
  27. 26480
  28. 0.02516
  29. 0.04438
  30. 4351
  31. 2696
  32. 513
  33. 43.75
  34. 0.02431
  35. 1.888
  36. 4991
  37. 1530
  38. 3743
  39. 179.6
  40. 424400

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