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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 384 · 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. 1.24.66 × 100 =
  2. 2.406.5 ÷ 100 =
  3. 3.112.9 ÷ 10 =
  4. 4.34.96 × 10 =
  5. 5.12.01 × 10 =
  6. 6.279.9 ÷ 100 =
  7. 7.328.5 ÷ 10 =
  8. 8.1.12 × 100 =
  9. 9.37.66 ÷ 10 =
  10. 10.160.9 × 1000 =
  11. 11.4.1 × 10 =
  12. 12.27.37 × 10 =
  13. 13.18.76 × 100 =
  14. 14.37.07 × 10 =
  15. 15.49.19 × 1000 =
  16. 16.231.6 × 1000 =
  17. 17.35.12 ÷ 1000 =
  18. 18.467.9 ÷ 10 =
  19. 19.16.17 ÷ 1000 =
  20. 20.4.91 ÷ 1000 =
  21. 21.2.92 ÷ 100 =
  22. 22.87.6 ÷ 10 =
  23. 23.28.1 × 10 =
  24. 24.490.1 × 1000 =
  25. 25.237.1 ÷ 10 =
  26. 26.15.93 ÷ 1000 =
  27. 27.46.85 ÷ 10 =
  28. 28.73.3 × 10 =
  29. 29.6.23 × 10 =
  30. 30.35.4 × 100 =
  31. 31.22.44 × 1000 =
  32. 32.146.9 × 100 =
  33. 33.211.4 × 100 =
  34. 34.213.8 × 10 =
  35. 35.266.5 ÷ 10 =
  36. 36.25.41 ÷ 10 =
  37. 37.29.44 × 100 =
  38. 38.31.09 ÷ 10 =
  39. 39.23.57 ÷ 1000 =
  40. 40.15.52 ÷ 100 =

Answer key

  1. 2466
  2. 4.065
  3. 11.29
  4. 349.6
  5. 120.1
  6. 2.799
  7. 32.85
  8. 112
  9. 3.766
  10. 160900
  11. 41
  12. 273.7
  13. 1876
  14. 370.7
  15. 49190
  16. 231600
  17. 0.03512
  18. 46.79
  19. 0.01617
  20. 0.00491
  21. 0.0292
  22. 8.76
  23. 281
  24. 490100
  25. 23.71
  26. 0.01593
  27. 4.685
  28. 733
  29. 62.3
  30. 3540
  31. 22440
  32. 14690
  33. 21140
  34. 2138
  35. 26.65
  36. 2.541
  37. 2944
  38. 3.109
  39. 0.02357
  40. 0.1552

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