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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 157 · 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. 1.56.4 ÷ 100 =
  2. 2.459.1 × 100 =
  3. 3.227.1 × 100 =
  4. 4.29.91 ÷ 1000 =
  5. 5.258.2 × 100 =
  6. 6.47.4 ÷ 10 =
  7. 7.406.5 × 100 =
  8. 8.92.5 ÷ 100 =
  9. 9.26.58 ÷ 10 =
  10. 10.87.9 ÷ 10 =
  11. 11.21.21 ÷ 10 =
  12. 12.215.1 ÷ 10 =
  13. 13.1.25 ÷ 1000 =
  14. 14.31.94 ÷ 10 =
  15. 15.24.78 ÷ 10 =
  16. 16.34.74 × 10 =
  17. 17.394.3 ÷ 1000 =
  18. 18.4.58 ÷ 100 =
  19. 19.131.7 ÷ 1000 =
  20. 20.211.7 ÷ 1000 =
  21. 21.61.2 × 100 =
  22. 22.8.23 × 1000 =
  23. 23.8.23 × 10 =
  24. 24.470.2 × 10 =
  25. 25.35.65 × 1000 =
  26. 26.16.89 × 100 =
  27. 27.18.3 ÷ 10 =
  28. 28.135.3 ÷ 100 =
  29. 29.390.6 × 1000 =
  30. 30.37.41 × 100 =
  31. 31.28.13 × 100 =
  32. 32.3.31 × 100 =
  33. 33.438.1 × 10 =
  34. 34.22.91 ÷ 100 =
  35. 35.137.9 × 100 =
  36. 36.332.4 × 1000 =
  37. 37.9.87 × 10 =
  38. 38.438.6 × 100 =
  39. 39.9.75 ÷ 1000 =
  40. 40.48.74 ÷ 1000 =

Answer key

  1. 0.564
  2. 45910
  3. 22710
  4. 0.02991
  5. 25820
  6. 4.74
  7. 40650
  8. 0.925
  9. 2.658
  10. 8.79
  11. 2.121
  12. 21.51
  13. 0.00125
  14. 3.194
  15. 2.478
  16. 347.4
  17. 0.3943
  18. 0.0458
  19. 0.1317
  20. 0.2117
  21. 6120
  22. 8230
  23. 82.3
  24. 4702
  25. 35650
  26. 1689
  27. 1.83
  28. 1.353
  29. 390600
  30. 3741
  31. 2813
  32. 331
  33. 4381
  34. 0.2291
  35. 13790
  36. 332400
  37. 98.7
  38. 43860
  39. 0.00975
  40. 0.04874

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