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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 501 · 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. 1.315.2 ÷ 1000 =
  2. 2.35.01 × 10 =
  3. 3.67.1 × 10 =
  4. 4.24.28 ÷ 10 =
  5. 5.31.88 ÷ 1000 =
  6. 6.43.51 × 10 =
  7. 7.40.53 ÷ 10 =
  8. 8.8.35 × 1000 =
  9. 9.271.7 ÷ 10 =
  10. 10.178.6 ÷ 100 =
  11. 11.31.03 ÷ 100 =
  12. 12.410.5 × 10 =
  13. 13.5.29 × 10 =
  14. 14.137.7 × 1000 =
  15. 15.7.93 ÷ 10 =
  16. 16.153.1 × 100 =
  17. 17.128.2 × 10 =
  18. 18.34.59 × 1000 =
  19. 19.19.81 ÷ 10 =
  20. 20.48.21 × 1000 =
  21. 21.395.3 × 100 =
  22. 22.306.1 × 10 =
  23. 23.27.05 × 10 =
  24. 24.22.43 × 10 =
  25. 25.4.74 × 10 =
  26. 26.14.77 × 100 =
  27. 27.26.25 × 10 =
  28. 28.18.15 × 100 =
  29. 29.78.1 × 100 =
  30. 30.313.7 × 1000 =
  31. 31.8.38 × 10 =
  32. 32.18.76 × 1000 =
  33. 33.43.3 × 1000 =
  34. 34.113.1 ÷ 100 =
  35. 35.102.4 × 10 =
  36. 36.13.89 × 100 =
  37. 37.222.3 ÷ 100 =
  38. 38.28.96 × 10 =
  39. 39.36.63 × 1000 =
  40. 40.146.9 × 1000 =

Answer key

  1. 0.3152
  2. 350.1
  3. 671
  4. 2.428
  5. 0.03188
  6. 435.1
  7. 4.053
  8. 8350
  9. 27.17
  10. 1.786
  11. 0.3103
  12. 4105
  13. 52.9
  14. 137700
  15. 0.793
  16. 15310
  17. 1282
  18. 34590
  19. 1.981
  20. 48210
  21. 39530
  22. 3061
  23. 270.5
  24. 224.3
  25. 47.4
  26. 1477
  27. 262.5
  28. 1815
  29. 7810
  30. 313700
  31. 83.8
  32. 18760
  33. 43300
  34. 1.131
  35. 1024
  36. 1389
  37. 2.223
  38. 289.6
  39. 36630
  40. 146900

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