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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 333 · 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. 1.321.6 ÷ 1000 =
  2. 2.46.34 ÷ 1000 =
  3. 3.409.2 ÷ 10 =
  4. 4.35.39 × 10 =
  5. 5.17.35 ÷ 10 =
  6. 6.33.96 ÷ 100 =
  7. 7.439.9 × 10 =
  8. 8.20.33 × 10 =
  9. 9.201.1 × 10 =
  10. 10.185.1 ÷ 1000 =
  11. 11.232.7 × 1000 =
  12. 12.302.3 × 10 =
  13. 13.385.6 ÷ 10 =
  14. 14.239.8 ÷ 10 =
  15. 15.8.63 ÷ 10 =
  16. 16.173.8 ÷ 1000 =
  17. 17.252.1 × 10 =
  18. 18.486.5 × 100 =
  19. 19.37.11 ÷ 100 =
  20. 20.200.8 × 10 =
  21. 21.49.38 ÷ 10 =
  22. 22.56.6 × 1000 =
  23. 23.40.69 × 10 =
  24. 24.448.2 × 10 =
  25. 25.421.2 × 1000 =
  26. 26.332.9 × 10 =
  27. 27.405.4 × 10 =
  28. 28.182.2 × 10 =
  29. 29.38.82 × 1000 =
  30. 30.8.03 × 10 =
  31. 31.119.5 ÷ 10 =
  32. 32.358.4 ÷ 1000 =
  33. 33.45.11 × 1000 =
  34. 34.9.44 × 100 =
  35. 35.34.39 × 100 =
  36. 36.28.19 ÷ 10 =
  37. 37.471.1 ÷ 10 =
  38. 38.49.9 × 10 =
  39. 39.312.6 ÷ 10 =
  40. 40.32.35 × 100 =

Answer key

  1. 0.3216
  2. 0.04634
  3. 40.92
  4. 353.9
  5. 1.735
  6. 0.3396
  7. 4399
  8. 203.3
  9. 2011
  10. 0.1851
  11. 232700
  12. 3023
  13. 38.56
  14. 23.98
  15. 0.863
  16. 0.1738
  17. 2521
  18. 48650
  19. 0.3711
  20. 2008
  21. 4.938
  22. 56600
  23. 406.9
  24. 4482
  25. 421200
  26. 3329
  27. 4054
  28. 1822
  29. 38820
  30. 80.3
  31. 11.95
  32. 0.3584
  33. 45110
  34. 944
  35. 3439
  36. 2.819
  37. 47.11
  38. 499
  39. 31.26
  40. 3235

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