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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 811 · 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. 1.3.39 ÷ 1000 =
  2. 2.320.9 × 100 =
  3. 3.452.1 ÷ 100 =
  4. 4.14.06 × 100 =
  5. 5.109.8 ÷ 1000 =
  6. 6.29.3 × 100 =
  7. 7.38.71 × 10 =
  8. 8.56.5 × 10 =
  9. 9.45.42 ÷ 1000 =
  10. 10.16.66 × 10 =
  11. 11.112.2 ÷ 10 =
  12. 12.45.34 × 100 =
  13. 13.35.68 ÷ 10 =
  14. 14.70.6 × 100 =
  15. 15.148.9 ÷ 10 =
  16. 16.2.61 × 1000 =
  17. 17.151.7 ÷ 1000 =
  18. 18.22.91 × 10 =
  19. 19.115.5 × 100 =
  20. 20.1.74 × 100 =
  21. 21.379.7 ÷ 10 =
  22. 22.56.9 ÷ 10 =
  23. 23.43.02 × 10 =
  24. 24.48.71 × 10 =
  25. 25.76.8 × 10 =
  26. 26.36.64 × 1000 =
  27. 27.130.6 ÷ 10 =
  28. 28.8.29 ÷ 100 =
  29. 29.17.59 ÷ 100 =
  30. 30.6.35 × 100 =
  31. 31.6.81 × 10 =
  32. 32.48.37 × 100 =
  33. 33.475.4 × 10 =
  34. 34.27.64 × 10 =
  35. 35.27.76 ÷ 100 =
  36. 36.32.27 ÷ 10 =
  37. 37.39.3 ÷ 100 =
  38. 38.173.4 × 100 =
  39. 39.5.31 ÷ 10 =
  40. 40.15.3 ÷ 100 =

Answer key

  1. 0.00339
  2. 32090
  3. 4.521
  4. 1406
  5. 0.1098
  6. 2930
  7. 387.1
  8. 565
  9. 0.04542
  10. 166.6
  11. 11.22
  12. 4534
  13. 3.568
  14. 7060
  15. 14.89
  16. 2610
  17. 0.1517
  18. 229.1
  19. 11550
  20. 174
  21. 37.97
  22. 5.69
  23. 430.2
  24. 487.1
  25. 768
  26. 36640
  27. 13.06
  28. 0.0829
  29. 0.1759
  30. 635
  31. 68.1
  32. 4837
  33. 4754
  34. 276.4
  35. 0.2776
  36. 3.227
  37. 0.393
  38. 17340
  39. 0.531
  40. 0.153

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