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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 673 · 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. 1.304.1 × 10 =
  2. 2.41.18 ÷ 1000 =
  3. 3.488.1 ÷ 1000 =
  4. 4.169.8 × 100 =
  5. 5.311.6 × 100 =
  6. 6.7.49 × 100 =
  7. 7.46.77 × 1000 =
  8. 8.431.8 × 100 =
  9. 9.203.1 × 10 =
  10. 10.25.35 ÷ 1000 =
  11. 11.284.6 × 10 =
  12. 12.23.21 ÷ 1000 =
  13. 13.331.3 ÷ 100 =
  14. 14.23.28 ÷ 1000 =
  15. 15.19.44 × 100 =
  16. 16.42.24 × 100 =
  17. 17.2.5 × 100 =
  18. 18.88.2 ÷ 10 =
  19. 19.337.2 × 1000 =
  20. 20.25.36 × 100 =
  21. 21.40.02 ÷ 10 =
  22. 22.391.2 × 10 =
  23. 23.100.1 × 10 =
  24. 24.207.4 × 100 =
  25. 25.412.1 × 1000 =
  26. 26.47.54 ÷ 1000 =
  27. 27.74.6 × 1000 =
  28. 28.457.3 × 1000 =
  29. 29.1.24 × 100 =
  30. 30.293.8 × 100 =
  31. 31.49.62 ÷ 100 =
  32. 32.36.55 × 10 =
  33. 33.26.4 × 1000 =
  34. 34.34.88 × 1000 =
  35. 35.18.33 ÷ 10 =
  36. 36.269.5 × 100 =
  37. 37.244.9 × 10 =
  38. 38.306.6 × 10 =
  39. 39.48.91 × 1000 =
  40. 40.486.6 × 100 =

Answer key

  1. 3041
  2. 0.04118
  3. 0.4881
  4. 16980
  5. 31160
  6. 749
  7. 46770
  8. 43180
  9. 2031
  10. 0.02535
  11. 2846
  12. 0.02321
  13. 3.313
  14. 0.02328
  15. 1944
  16. 4224
  17. 250
  18. 8.82
  19. 337200
  20. 2536
  21. 4.002
  22. 3912
  23. 1001
  24. 20740
  25. 412100
  26. 0.04754
  27. 74600
  28. 457300
  29. 124
  30. 29380
  31. 0.4962
  32. 365.5
  33. 26400
  34. 34880
  35. 1.833
  36. 26950
  37. 2449
  38. 3066
  39. 48910
  40. 48660

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