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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 785 · 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. 1.49.23 × 10 =
  2. 2.59.4 ÷ 1000 =
  3. 3.208.3 × 1000 =
  4. 4.6.2 × 1000 =
  5. 5.454.1 ÷ 1000 =
  6. 6.328.2 ÷ 1000 =
  7. 7.19.07 ÷ 100 =
  8. 8.49.53 × 1000 =
  9. 9.48.37 × 100 =
  10. 10.31.91 × 100 =
  11. 11.56.1 ÷ 1000 =
  12. 12.37.1 × 10 =
  13. 13.348.4 × 10 =
  14. 14.18.65 × 100 =
  15. 15.41.78 ÷ 10 =
  16. 16.323.1 ÷ 10 =
  17. 17.47.49 ÷ 1000 =
  18. 18.33.89 × 1000 =
  19. 19.44.19 ÷ 100 =
  20. 20.6.15 × 100 =
  21. 21.46.04 × 10 =
  22. 22.35.14 ÷ 10 =
  23. 23.440.9 ÷ 10 =
  24. 24.422.7 ÷ 1000 =
  25. 25.3.76 ÷ 10 =
  26. 26.37.42 ÷ 100 =
  27. 27.21.39 × 1000 =
  28. 28.140.4 × 100 =
  29. 29.474.9 × 10 =
  30. 30.7.61 ÷ 10 =
  31. 31.124.1 × 10 =
  32. 32.10.8 ÷ 1000 =
  33. 33.27.98 × 10 =
  34. 34.82.6 × 1000 =
  35. 35.8.22 ÷ 100 =
  36. 36.225.6 ÷ 10 =
  37. 37.18.1 ÷ 1000 =
  38. 38.86.5 × 10 =
  39. 39.37.24 × 1000 =
  40. 40.11.84 ÷ 1000 =

Answer key

  1. 492.3
  2. 0.0594
  3. 208300
  4. 6200
  5. 0.4541
  6. 0.3282
  7. 0.1907
  8. 49530
  9. 4837
  10. 3191
  11. 0.0561
  12. 371
  13. 3484
  14. 1865
  15. 4.178
  16. 32.31
  17. 0.04749
  18. 33890
  19. 0.4419
  20. 615
  21. 460.4
  22. 3.514
  23. 44.09
  24. 0.4227
  25. 0.376
  26. 0.3742
  27. 21390
  28. 14040
  29. 4749
  30. 0.761
  31. 1241
  32. 0.0108
  33. 279.8
  34. 82600
  35. 0.0822
  36. 22.56
  37. 0.0181
  38. 865
  39. 37240
  40. 0.01184

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