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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 701 · 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. 1.43.4 ÷ 100 =
  2. 2.418.7 ÷ 1000 =
  3. 3.416.5 × 10 =
  4. 4.26.26 ÷ 1000 =
  5. 5.5.1 ÷ 10 =
  6. 6.15.63 ÷ 100 =
  7. 7.234.8 × 100 =
  8. 8.179.6 ÷ 1000 =
  9. 9.36.82 ÷ 100 =
  10. 10.185.1 ÷ 100 =
  11. 11.29.31 ÷ 10 =
  12. 12.3.84 × 1000 =
  13. 13.205.6 ÷ 1000 =
  14. 14.19.03 ÷ 1000 =
  15. 15.243.1 ÷ 10 =
  16. 16.9.61 ÷ 100 =
  17. 17.3.99 × 10 =
  18. 18.4.76 × 10 =
  19. 19.150.2 × 1000 =
  20. 20.122.2 × 10 =
  21. 21.9.58 ÷ 1000 =
  22. 22.107.5 ÷ 100 =
  23. 23.4.81 × 100 =
  24. 24.371.1 × 100 =
  25. 25.4.82 × 10 =
  26. 26.15.65 × 10 =
  27. 27.224.2 × 1000 =
  28. 28.384.6 × 10 =
  29. 29.5.75 ÷ 10 =
  30. 30.17.02 × 1000 =
  31. 31.24.94 ÷ 10 =
  32. 32.0.31 ÷ 10 =
  33. 33.141.8 ÷ 1000 =
  34. 34.37.98 × 1000 =
  35. 35.275.3 ÷ 1000 =
  36. 36.79.1 × 100 =
  37. 37.418.7 × 10 =
  38. 38.307.1 ÷ 1000 =
  39. 39.66.4 × 100 =
  40. 40.26.14 ÷ 1000 =

Answer key

  1. 0.434
  2. 0.4187
  3. 4165
  4. 0.02626
  5. 0.51
  6. 0.1563
  7. 23480
  8. 0.1796
  9. 0.3682
  10. 1.851
  11. 2.931
  12. 3840
  13. 0.2056
  14. 0.01903
  15. 24.31
  16. 0.0961
  17. 39.9
  18. 47.6
  19. 150200
  20. 1222
  21. 0.00958
  22. 1.075
  23. 481
  24. 37110
  25. 48.2
  26. 156.5
  27. 224200
  28. 3846
  29. 0.575
  30. 17020
  31. 2.494
  32. 0.031
  33. 0.1418
  34. 37980
  35. 0.2753
  36. 7910
  37. 4187
  38. 0.3071
  39. 6640
  40. 0.02614

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