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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 14 · 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. 1.6.35 × 100 =
  2. 2.196.2 × 10 =
  3. 3.418.6 × 1000 =
  4. 4.292.2 × 100 =
  5. 5.84.3 × 100 =
  6. 6.15.99 ÷ 1000 =
  7. 7.156.6 ÷ 100 =
  8. 8.129.3 ÷ 10 =
  9. 9.17.89 × 10 =
  10. 10.359.7 ÷ 10 =
  11. 11.493.2 ÷ 10 =
  12. 12.7.89 ÷ 100 =
  13. 13.66.8 ÷ 100 =
  14. 14.45.91 × 10 =
  15. 15.332.1 × 1000 =
  16. 16.185.2 × 10 =
  17. 17.346.6 × 100 =
  18. 18.42.41 ÷ 100 =
  19. 19.190.3 ÷ 100 =
  20. 20.9.79 ÷ 10 =
  21. 21.483.2 ÷ 10 =
  22. 22.19.96 ÷ 10 =
  23. 23.1.03 ÷ 10 =
  24. 24.394.4 ÷ 1000 =
  25. 25.453.4 ÷ 100 =
  26. 26.95.5 × 100 =
  27. 27.255.8 ÷ 1000 =
  28. 28.10.99 ÷ 10 =
  29. 29.330.4 × 1000 =
  30. 30.27.74 × 1000 =
  31. 31.466.2 ÷ 100 =
  32. 32.8.74 ÷ 10 =
  33. 33.47.5 ÷ 100 =
  34. 34.0.75 × 1000 =
  35. 35.352.5 × 100 =
  36. 36.118.1 ÷ 100 =
  37. 37.24.31 ÷ 10 =
  38. 38.403.8 × 100 =
  39. 39.7.51 ÷ 10 =
  40. 40.19.22 ÷ 10 =

Answer key

  1. 635
  2. 1962
  3. 418600
  4. 29220
  5. 8430
  6. 0.01599
  7. 1.566
  8. 12.93
  9. 178.9
  10. 35.97
  11. 49.32
  12. 0.0789
  13. 0.668
  14. 459.1
  15. 332100
  16. 1852
  17. 34660
  18. 0.4241
  19. 1.903
  20. 0.979
  21. 48.32
  22. 1.996
  23. 0.103
  24. 0.3944
  25. 4.534
  26. 9550
  27. 0.2558
  28. 1.099
  29. 330400
  30. 27740
  31. 4.662
  32. 0.874
  33. 0.475
  34. 750
  35. 35250
  36. 1.181
  37. 2.431
  38. 40380
  39. 0.751
  40. 1.922

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