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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 336 · 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. 1.32.34 × 10 =
  2. 2.338.6 ÷ 1000 =
  3. 3.31.51 × 100 =
  4. 4.123.4 ÷ 10 =
  5. 5.35.65 × 10 =
  6. 6.28.29 ÷ 100 =
  7. 7.25.29 × 10 =
  8. 8.168.2 ÷ 100 =
  9. 9.47.45 × 100 =
  10. 10.358.6 × 10 =
  11. 11.13.27 × 1000 =
  12. 12.0.49 × 100 =
  13. 13.20.61 × 10 =
  14. 14.11.99 × 10 =
  15. 15.3.38 × 100 =
  16. 16.6.24 ÷ 10 =
  17. 17.50.9 ÷ 10 =
  18. 18.17.51 × 100 =
  19. 19.276.4 ÷ 1000 =
  20. 20.125.1 ÷ 10 =
  21. 21.37.4 × 1000 =
  22. 22.59.3 ÷ 1000 =
  23. 23.160.1 × 1000 =
  24. 24.488.4 ÷ 100 =
  25. 25.14.02 ÷ 1000 =
  26. 26.112.3 ÷ 1000 =
  27. 27.29.48 ÷ 10 =
  28. 28.148.2 ÷ 100 =
  29. 29.120.8 × 100 =
  30. 30.129.5 ÷ 1000 =
  31. 31.473.1 × 1000 =
  32. 32.47.21 × 100 =
  33. 33.59.1 ÷ 100 =
  34. 34.45.62 × 10 =
  35. 35.40.28 × 100 =
  36. 36.49.48 ÷ 100 =
  37. 37.11.99 × 100 =
  38. 38.4.69 × 10 =
  39. 39.83.1 × 10 =
  40. 40.23.15 × 1000 =

Answer key

  1. 323.4
  2. 0.3386
  3. 3151
  4. 12.34
  5. 356.5
  6. 0.2829
  7. 252.9
  8. 1.682
  9. 4745
  10. 3586
  11. 13270
  12. 49
  13. 206.1
  14. 119.9
  15. 338
  16. 0.624
  17. 5.09
  18. 1751
  19. 0.2764
  20. 12.51
  21. 37400
  22. 0.0593
  23. 160100
  24. 4.884
  25. 0.01402
  26. 0.1123
  27. 2.948
  28. 1.482
  29. 12080
  30. 0.1295
  31. 473100
  32. 4721
  33. 0.591
  34. 456.2
  35. 4028
  36. 0.4948
  37. 1199
  38. 46.9
  39. 831
  40. 23150

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