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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 280 · 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. 1.15.36 ÷ 1000 =
  2. 2.38.16 × 1000 =
  3. 3.408.5 ÷ 10 =
  4. 4.373.2 ÷ 100 =
  5. 5.458.2 × 1000 =
  6. 6.449.5 ÷ 1000 =
  7. 7.31.92 × 1000 =
  8. 8.32.58 ÷ 10 =
  9. 9.7.17 ÷ 1000 =
  10. 10.483.7 ÷ 100 =
  11. 11.61.7 ÷ 100 =
  12. 12.19.76 ÷ 10 =
  13. 13.359.6 × 10 =
  14. 14.306.3 × 100 =
  15. 15.429.5 ÷ 10 =
  16. 16.17.1 × 100 =
  17. 17.406.1 ÷ 1000 =
  18. 18.10.65 ÷ 10 =
  19. 19.198.3 × 100 =
  20. 20.29.85 × 1000 =
  21. 21.183.3 ÷ 1000 =
  22. 22.460.2 × 100 =
  23. 23.8.08 ÷ 1000 =
  24. 24.220.7 × 1000 =
  25. 25.41.61 ÷ 100 =
  26. 26.18.94 × 1000 =
  27. 27.18.47 × 100 =
  28. 28.421.5 ÷ 1000 =
  29. 29.46.13 × 10 =
  30. 30.12.98 × 100 =
  31. 31.0.73 ÷ 100 =
  32. 32.29.15 ÷ 10 =
  33. 33.7.69 × 1000 =
  34. 34.351.1 ÷ 100 =
  35. 35.260.8 ÷ 10 =
  36. 36.32.91 × 100 =
  37. 37.331.6 × 100 =
  38. 38.30.3 × 100 =
  39. 39.27.97 × 10 =
  40. 40.23.13 ÷ 100 =

Answer key

  1. 0.01536
  2. 38160
  3. 40.85
  4. 3.732
  5. 458200
  6. 0.4495
  7. 31920
  8. 3.258
  9. 0.00717
  10. 4.837
  11. 0.617
  12. 1.976
  13. 3596
  14. 30630
  15. 42.95
  16. 1710
  17. 0.4061
  18. 1.065
  19. 19830
  20. 29850
  21. 0.1833
  22. 46020
  23. 0.00808
  24. 220700
  25. 0.4161
  26. 18940
  27. 1847
  28. 0.4215
  29. 461.3
  30. 1298
  31. 0.0073
  32. 2.915
  33. 7690
  34. 3.511
  35. 26.08
  36. 3291
  37. 33160
  38. 3030
  39. 279.7
  40. 0.2313

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