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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 613 · 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. 1.399.3 × 100 =
  2. 2.37.71 ÷ 100 =
  3. 3.21.73 ÷ 1000 =
  4. 4.44.57 ÷ 1000 =
  5. 5.33.91 ÷ 10 =
  6. 6.17.1 ÷ 1000 =
  7. 7.0.51 ÷ 1000 =
  8. 8.42.22 × 10 =
  9. 9.401.8 × 10 =
  10. 10.32.59 ÷ 10 =
  11. 11.20.97 × 1000 =
  12. 12.89.3 ÷ 1000 =
  13. 13.44.14 × 10 =
  14. 14.23.48 × 10 =
  15. 15.70.1 ÷ 10 =
  16. 16.47.17 ÷ 10 =
  17. 17.219.4 ÷ 10 =
  18. 18.23.58 × 100 =
  19. 19.46.96 ÷ 100 =
  20. 20.10.81 × 10 =
  21. 21.3.07 ÷ 1000 =
  22. 22.358.4 × 10 =
  23. 23.40.27 ÷ 100 =
  24. 24.8.77 ÷ 10 =
  25. 25.79.9 ÷ 10 =
  26. 26.357.1 × 1000 =
  27. 27.70.5 ÷ 1000 =
  28. 28.110.9 ÷ 10 =
  29. 29.2.3 ÷ 1000 =
  30. 30.59.2 ÷ 1000 =
  31. 31.32.68 ÷ 10 =
  32. 32.2.04 × 1000 =
  33. 33.195.1 × 1000 =
  34. 34.32.49 ÷ 1000 =
  35. 35.127.5 ÷ 100 =
  36. 36.8.29 ÷ 100 =
  37. 37.10.99 × 10 =
  38. 38.30.4 ÷ 100 =
  39. 39.459.5 ÷ 10 =
  40. 40.337.6 × 10 =

Answer key

  1. 39930
  2. 0.3771
  3. 0.02173
  4. 0.04457
  5. 3.391
  6. 0.0171
  7. 0.00051
  8. 422.2
  9. 4018
  10. 3.259
  11. 20970
  12. 0.0893
  13. 441.4
  14. 234.8
  15. 7.01
  16. 4.717
  17. 21.94
  18. 2358
  19. 0.4696
  20. 108.1
  21. 0.00307
  22. 3584
  23. 0.4027
  24. 0.877
  25. 7.99
  26. 357100
  27. 0.0705
  28. 11.09
  29. 0.0023
  30. 0.0592
  31. 3.268
  32. 2040
  33. 195100
  34. 0.03249
  35. 1.275
  36. 0.0829
  37. 109.9
  38. 0.304
  39. 45.95
  40. 3376

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