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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 149 · 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. 1.30.46 × 10 =
  2. 2.17.46 ÷ 100 =
  3. 3.26.18 ÷ 100 =
  4. 4.374.4 × 10 =
  5. 5.39.26 ÷ 10 =
  6. 6.253.1 ÷ 10 =
  7. 7.185.6 ÷ 1000 =
  8. 8.10.7 ÷ 1000 =
  9. 9.394.1 × 1000 =
  10. 10.482.9 ÷ 10 =
  11. 11.216.2 × 100 =
  12. 12.48.31 × 10 =
  13. 13.14.66 ÷ 1000 =
  14. 14.469.8 ÷ 10 =
  15. 15.393.7 ÷ 1000 =
  16. 16.354.6 × 10 =
  17. 17.416.5 × 1000 =
  18. 18.59.4 × 100 =
  19. 19.14.71 × 10 =
  20. 20.441.6 × 100 =
  21. 21.12.69 × 1000 =
  22. 22.45.91 × 100 =
  23. 23.181.1 ÷ 100 =
  24. 24.11.1 ÷ 10 =
  25. 25.32.76 ÷ 1000 =
  26. 26.431.1 × 10 =
  27. 27.43.51 × 100 =
  28. 28.135.1 × 100 =
  29. 29.0.31 × 1000 =
  30. 30.43.67 × 1000 =
  31. 31.363.8 × 1000 =
  32. 32.34.89 × 10 =
  33. 33.169.1 × 1000 =
  34. 34.119.3 ÷ 10 =
  35. 35.448.5 × 10 =
  36. 36.93.6 × 100 =
  37. 37.33.55 × 100 =
  38. 38.147.5 ÷ 100 =
  39. 39.440.5 × 100 =
  40. 40.101.6 × 1000 =

Answer key

  1. 304.6
  2. 0.1746
  3. 0.2618
  4. 3744
  5. 3.926
  6. 25.31
  7. 0.1856
  8. 0.0107
  9. 394100
  10. 48.29
  11. 21620
  12. 483.1
  13. 0.01466
  14. 46.98
  15. 0.3937
  16. 3546
  17. 416500
  18. 5940
  19. 147.1
  20. 44160
  21. 12690
  22. 4591
  23. 1.811
  24. 1.11
  25. 0.03276
  26. 4311
  27. 4351
  28. 13510
  29. 310
  30. 43670
  31. 363800
  32. 348.9
  33. 169100
  34. 11.93
  35. 4485
  36. 9360
  37. 3355
  38. 1.475
  39. 44050
  40. 101600

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