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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 753 · 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. 1.8.83 × 100 =
  2. 2.11.62 × 100 =
  3. 3.83.5 × 10 =
  4. 4.351.7 × 10 =
  5. 5.79.8 × 100 =
  6. 6.3.13 ÷ 10 =
  7. 7.7.17 × 100 =
  8. 8.52.5 × 10 =
  9. 9.14.9 × 100 =
  10. 10.18.66 × 1000 =
  11. 11.1.77 × 1000 =
  12. 12.122.1 × 10 =
  13. 13.473.3 ÷ 100 =
  14. 14.12.7 ÷ 100 =
  15. 15.0.83 × 1000 =
  16. 16.469.9 × 10 =
  17. 17.296.1 ÷ 1000 =
  18. 18.35.27 ÷ 10 =
  19. 19.17.31 ÷ 10 =
  20. 20.4.86 ÷ 100 =
  21. 21.33.68 × 1000 =
  22. 22.20.34 ÷ 100 =
  23. 23.359.4 × 100 =
  24. 24.14.6 ÷ 1000 =
  25. 25.17.24 × 1000 =
  26. 26.15.65 ÷ 100 =
  27. 27.1.03 × 10 =
  28. 28.40.73 ÷ 1000 =
  29. 29.22.38 × 100 =
  30. 30.36.05 × 100 =
  31. 31.265.6 × 10 =
  32. 32.12.35 ÷ 10 =
  33. 33.2.1 × 10 =
  34. 34.38.31 ÷ 10 =
  35. 35.37.51 ÷ 10 =
  36. 36.21.85 × 10 =
  37. 37.16.09 ÷ 1000 =
  38. 38.281.3 ÷ 10 =
  39. 39.299.7 ÷ 100 =
  40. 40.426.6 ÷ 10 =

Answer key

  1. 883
  2. 1162
  3. 835
  4. 3517
  5. 7980
  6. 0.313
  7. 717
  8. 525
  9. 1490
  10. 18660
  11. 1770
  12. 1221
  13. 4.733
  14. 0.127
  15. 830
  16. 4699
  17. 0.2961
  18. 3.527
  19. 1.731
  20. 0.0486
  21. 33680
  22. 0.2034
  23. 35940
  24. 0.0146
  25. 17240
  26. 0.1565
  27. 10.3
  28. 0.04073
  29. 2238
  30. 3605
  31. 2656
  32. 1.235
  33. 21
  34. 3.831
  35. 3.751
  36. 218.5
  37. 0.01609
  38. 28.13
  39. 2.997
  40. 42.66

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