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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 714 · 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. 1.12.93 ÷ 10 =
  2. 2.147.5 × 10 =
  3. 3.36.99 × 10 =
  4. 4.54.6 ÷ 100 =
  5. 5.37.5 × 100 =
  6. 6.32.49 × 10 =
  7. 7.360.6 ÷ 100 =
  8. 8.26.14 ÷ 100 =
  9. 9.202.1 × 100 =
  10. 10.16.07 ÷ 100 =
  11. 11.427.3 ÷ 1000 =
  12. 12.349.7 ÷ 1000 =
  13. 13.2.91 × 1000 =
  14. 14.352.3 × 100 =
  15. 15.11.76 × 1000 =
  16. 16.478.3 × 100 =
  17. 17.210.1 ÷ 1000 =
  18. 18.1.68 ÷ 1000 =
  19. 19.345.6 × 100 =
  20. 20.7.33 × 1000 =
  21. 21.10.73 ÷ 1000 =
  22. 22.214.7 × 10 =
  23. 23.0.75 ÷ 1000 =
  24. 24.7.23 × 10 =
  25. 25.37.71 ÷ 10 =
  26. 26.38.02 × 10 =
  27. 27.150.1 ÷ 100 =
  28. 28.126.5 ÷ 10 =
  29. 29.403.5 × 10 =
  30. 30.38.25 × 10 =
  31. 31.457.1 ÷ 1000 =
  32. 32.215.8 ÷ 10 =
  33. 33.4.44 × 1000 =
  34. 34.155.7 ÷ 1000 =
  35. 35.460.4 × 100 =
  36. 36.43.42 × 1000 =
  37. 37.177.2 × 10 =
  38. 38.19.17 ÷ 100 =
  39. 39.281.9 × 1000 =
  40. 40.23.43 × 100 =

Answer key

  1. 1.293
  2. 1475
  3. 369.9
  4. 0.546
  5. 3750
  6. 324.9
  7. 3.606
  8. 0.2614
  9. 20210
  10. 0.1607
  11. 0.4273
  12. 0.3497
  13. 2910
  14. 35230
  15. 11760
  16. 47830
  17. 0.2101
  18. 0.00168
  19. 34560
  20. 7330
  21. 0.01073
  22. 2147
  23. 0.00075
  24. 72.3
  25. 3.771
  26. 380.2
  27. 1.501
  28. 12.65
  29. 4035
  30. 382.5
  31. 0.4571
  32. 21.58
  33. 4440
  34. 0.1557
  35. 46040
  36. 43420
  37. 1772
  38. 0.1917
  39. 281900
  40. 2343

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