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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 134 · 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. 1.16.71 × 1000 =
  2. 2.272.3 ÷ 10 =
  3. 3.2.09 × 100 =
  4. 4.23.37 ÷ 100 =
  5. 5.22.14 ÷ 10 =
  6. 6.406.8 × 1000 =
  7. 7.183.9 × 1000 =
  8. 8.13.57 × 10 =
  9. 9.40.5 ÷ 1000 =
  10. 10.38.91 ÷ 1000 =
  11. 11.61.2 × 100 =
  12. 12.27.76 ÷ 100 =
  13. 13.499.2 ÷ 100 =
  14. 14.3.1 ÷ 100 =
  15. 15.47.36 × 100 =
  16. 16.17.31 × 10 =
  17. 17.41.11 ÷ 10 =
  18. 18.168.9 × 10 =
  19. 19.191.5 ÷ 10 =
  20. 20.300.1 ÷ 10 =
  21. 21.35.47 ÷ 10 =
  22. 22.164.6 × 10 =
  23. 23.10.33 ÷ 1000 =
  24. 24.89.4 × 100 =
  25. 25.49.91 × 1000 =
  26. 26.45.19 ÷ 100 =
  27. 27.372.7 × 100 =
  28. 28.2.85 × 10 =
  29. 29.22.73 × 10 =
  30. 30.225.3 × 10 =
  31. 31.43.15 ÷ 1000 =
  32. 32.410.8 × 10 =
  33. 33.97.7 × 10 =
  34. 34.47.05 × 10 =
  35. 35.9.91 × 1000 =
  36. 36.3.48 ÷ 1000 =
  37. 37.30.21 × 1000 =
  38. 38.5.37 ÷ 100 =
  39. 39.62.8 × 10 =
  40. 40.25.53 × 10 =

Answer key

  1. 16710
  2. 27.23
  3. 209
  4. 0.2337
  5. 2.214
  6. 406800
  7. 183900
  8. 135.7
  9. 0.0405
  10. 0.03891
  11. 6120
  12. 0.2776
  13. 4.992
  14. 0.031
  15. 4736
  16. 173.1
  17. 4.111
  18. 1689
  19. 19.15
  20. 30.01
  21. 3.547
  22. 1646
  23. 0.01033
  24. 8940
  25. 49910
  26. 0.4519
  27. 37270
  28. 28.5
  29. 227.3
  30. 2253
  31. 0.04315
  32. 4108
  33. 977
  34. 470.5
  35. 9910
  36. 0.00348
  37. 30210
  38. 0.0537
  39. 628
  40. 255.3

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