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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 663 · 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. 1.260.1 × 100 =
  2. 2.466.2 × 100 =
  3. 3.397.6 × 100 =
  4. 4.73.6 × 10 =
  5. 5.240.4 × 10 =
  6. 6.47.45 ÷ 100 =
  7. 7.169.6 ÷ 10 =
  8. 8.227.9 × 100 =
  9. 9.199.8 ÷ 100 =
  10. 10.222.8 ÷ 100 =
  11. 11.204.2 ÷ 1000 =
  12. 12.49.58 ÷ 100 =
  13. 13.6.34 × 1000 =
  14. 14.415.8 × 100 =
  15. 15.3.21 × 10 =
  16. 16.309.7 ÷ 10 =
  17. 17.169.7 × 10 =
  18. 18.18.49 ÷ 10 =
  19. 19.11.11 ÷ 10 =
  20. 20.45.26 × 100 =
  21. 21.403.4 × 10 =
  22. 22.5.11 × 100 =
  23. 23.41.93 × 100 =
  24. 24.5.85 ÷ 100 =
  25. 25.43.81 × 100 =
  26. 26.26.49 ÷ 1000 =
  27. 27.1.08 × 10 =
  28. 28.9.73 × 1000 =
  29. 29.37.29 × 10 =
  30. 30.46.56 × 10 =
  31. 31.15.97 × 100 =
  32. 32.461.7 ÷ 100 =
  33. 33.31.08 ÷ 1000 =
  34. 34.364.4 × 1000 =
  35. 35.462.1 × 100 =
  36. 36.29.95 × 10 =
  37. 37.114.7 ÷ 1000 =
  38. 38.198.9 ÷ 10 =
  39. 39.49.25 ÷ 10 =
  40. 40.327.1 ÷ 1000 =

Answer key

  1. 26010
  2. 46620
  3. 39760
  4. 736
  5. 2404
  6. 0.4745
  7. 16.96
  8. 22790
  9. 1.998
  10. 2.228
  11. 0.2042
  12. 0.4958
  13. 6340
  14. 41580
  15. 32.1
  16. 30.97
  17. 1697
  18. 1.849
  19. 1.111
  20. 4526
  21. 4034
  22. 511
  23. 4193
  24. 0.0585
  25. 4381
  26. 0.02649
  27. 10.8
  28. 9730
  29. 372.9
  30. 465.6
  31. 1597
  32. 4.617
  33. 0.03108
  34. 364400
  35. 46210
  36. 299.5
  37. 0.1147
  38. 19.89
  39. 4.925
  40. 0.3271

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