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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 633 · 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. 1.398.5 ÷ 1000 =
  2. 2.463.7 × 10 =
  3. 3.45.88 ÷ 100 =
  4. 4.276.1 ÷ 100 =
  5. 5.11.22 × 10 =
  6. 6.38.04 ÷ 10 =
  7. 7.26.62 ÷ 10 =
  8. 8.497.8 ÷ 100 =
  9. 9.102.5 × 10 =
  10. 10.360.9 ÷ 10 =
  11. 11.29.42 × 100 =
  12. 12.262.8 × 100 =
  13. 13.361.9 × 100 =
  14. 14.103.9 × 10 =
  15. 15.32.11 × 10 =
  16. 16.80.3 ÷ 10 =
  17. 17.9.75 ÷ 10 =
  18. 18.468.2 × 100 =
  19. 19.2.63 ÷ 10 =
  20. 20.481.7 × 10 =
  21. 21.33.4 ÷ 10 =
  22. 22.2.26 × 1000 =
  23. 23.45.04 ÷ 100 =
  24. 24.252.9 ÷ 1000 =
  25. 25.5.5 ÷ 100 =
  26. 26.15.97 × 100 =
  27. 27.402.1 × 10 =
  28. 28.438.8 ÷ 1000 =
  29. 29.117.8 ÷ 100 =
  30. 30.13.1 ÷ 1000 =
  31. 31.272.8 ÷ 100 =
  32. 32.68.9 ÷ 1000 =
  33. 33.9.88 × 10 =
  34. 34.147.2 × 10 =
  35. 35.38.71 ÷ 1000 =
  36. 36.31.21 ÷ 100 =
  37. 37.419.1 × 100 =
  38. 38.47.5 × 10 =
  39. 39.111.8 ÷ 100 =
  40. 40.23.89 ÷ 10 =

Answer key

  1. 0.3985
  2. 4637
  3. 0.4588
  4. 2.761
  5. 112.2
  6. 3.804
  7. 2.662
  8. 4.978
  9. 1025
  10. 36.09
  11. 2942
  12. 26280
  13. 36190
  14. 1039
  15. 321.1
  16. 8.03
  17. 0.975
  18. 46820
  19. 0.263
  20. 4817
  21. 3.34
  22. 2260
  23. 0.4504
  24. 0.2529
  25. 0.055
  26. 1597
  27. 4021
  28. 0.4388
  29. 1.178
  30. 0.0131
  31. 2.728
  32. 0.0689
  33. 98.8
  34. 1472
  35. 0.03871
  36. 0.3121
  37. 41910
  38. 475
  39. 1.118
  40. 2.389

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