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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 723 · 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. 1.9.47 ÷ 10 =
  2. 2.42.25 × 1000 =
  3. 3.119.2 × 1000 =
  4. 4.434.1 ÷ 10 =
  5. 5.445.4 × 1000 =
  6. 6.130.6 ÷ 10 =
  7. 7.22.27 × 1000 =
  8. 8.130.4 × 10 =
  9. 9.32.97 × 10 =
  10. 10.63.7 × 1000 =
  11. 11.27.85 × 10 =
  12. 12.139.8 ÷ 100 =
  13. 13.27.08 × 10 =
  14. 14.8.27 ÷ 10 =
  15. 15.55.3 × 10 =
  16. 16.3.65 ÷ 10 =
  17. 17.390.8 ÷ 100 =
  18. 18.397.5 × 10 =
  19. 19.25.78 ÷ 10 =
  20. 20.14.91 ÷ 1000 =
  21. 21.108.2 ÷ 100 =
  22. 22.121.3 ÷ 1000 =
  23. 23.187.5 × 100 =
  24. 24.124.5 ÷ 100 =
  25. 25.257.1 ÷ 100 =
  26. 26.24.95 ÷ 10 =
  27. 27.14.44 ÷ 100 =
  28. 28.187.5 × 1000 =
  29. 29.9.27 × 1000 =
  30. 30.34.01 ÷ 100 =
  31. 31.16.88 × 1000 =
  32. 32.149.9 ÷ 100 =
  33. 33.336.5 × 10 =
  34. 34.310.1 × 100 =
  35. 35.43.21 ÷ 10 =
  36. 36.116.1 × 100 =
  37. 37.46.93 ÷ 10 =
  38. 38.33.44 ÷ 1000 =
  39. 39.416.7 × 100 =
  40. 40.5.9 × 1000 =

Answer key

  1. 0.947
  2. 42250
  3. 119200
  4. 43.41
  5. 445400
  6. 13.06
  7. 22270
  8. 1304
  9. 329.7
  10. 63700
  11. 278.5
  12. 1.398
  13. 270.8
  14. 0.827
  15. 553
  16. 0.365
  17. 3.908
  18. 3975
  19. 2.578
  20. 0.01491
  21. 1.082
  22. 0.1213
  23. 18750
  24. 1.245
  25. 2.571
  26. 2.495
  27. 0.1444
  28. 187500
  29. 9270
  30. 0.3401
  31. 16880
  32. 1.499
  33. 3365
  34. 31010
  35. 4.321
  36. 11610
  37. 4.693
  38. 0.03344
  39. 41670
  40. 5900

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