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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 210 · 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. 1.472.1 ÷ 100 =
  2. 2.281.2 ÷ 10 =
  3. 3.7.76 × 100 =
  4. 4.49.88 × 10 =
  5. 5.318.5 ÷ 10 =
  6. 6.3.38 ÷ 100 =
  7. 7.451.8 ÷ 10 =
  8. 8.3.81 × 100 =
  9. 9.418.8 × 1000 =
  10. 10.10.43 ÷ 100 =
  11. 11.3.52 × 1000 =
  12. 12.40.36 × 10 =
  13. 13.6.67 × 100 =
  14. 14.3.1 × 100 =
  15. 15.354.3 ÷ 100 =
  16. 16.23.61 ÷ 1000 =
  17. 17.8.71 ÷ 1000 =
  18. 18.3.8 × 1000 =
  19. 19.374.1 × 100 =
  20. 20.36.37 ÷ 1000 =
  21. 21.338.9 × 100 =
  22. 22.26.59 × 1000 =
  23. 23.28.09 ÷ 10 =
  24. 24.335.4 ÷ 10 =
  25. 25.106.4 × 1000 =
  26. 26.56.1 ÷ 100 =
  27. 27.36.74 ÷ 1000 =
  28. 28.244.1 × 10 =
  29. 29.263.9 ÷ 100 =
  30. 30.18.93 × 1000 =
  31. 31.374.8 × 10 =
  32. 32.107.3 × 100 =
  33. 33.29.49 × 1000 =
  34. 34.42.94 × 10 =
  35. 35.67.5 × 10 =
  36. 36.48.94 ÷ 1000 =
  37. 37.47.59 × 10 =
  38. 38.462.1 × 100 =
  39. 39.0.15 × 1000 =
  40. 40.386.8 ÷ 10 =

Answer key

  1. 4.721
  2. 28.12
  3. 776
  4. 498.8
  5. 31.85
  6. 0.0338
  7. 45.18
  8. 381
  9. 418800
  10. 0.1043
  11. 3520
  12. 403.6
  13. 667
  14. 310
  15. 3.543
  16. 0.02361
  17. 0.00871
  18. 3800
  19. 37410
  20. 0.03637
  21. 33890
  22. 26590
  23. 2.809
  24. 33.54
  25. 106400
  26. 0.561
  27. 0.03674
  28. 2441
  29. 2.639
  30. 18930
  31. 3748
  32. 10730
  33. 29490
  34. 429.4
  35. 675
  36. 0.04894
  37. 475.9
  38. 46210
  39. 150
  40. 38.68

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