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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 170 · 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. 1.73.1 ÷ 100 =
  2. 2.13.35 × 100 =
  3. 3.7.52 ÷ 1000 =
  4. 4.161.8 × 10 =
  5. 5.11.16 ÷ 100 =
  6. 6.367.7 × 100 =
  7. 7.3.21 ÷ 100 =
  8. 8.17.71 × 100 =
  9. 9.4.38 × 10 =
  10. 10.150.1 × 10 =
  11. 11.21.2 × 1000 =
  12. 12.447.1 ÷ 100 =
  13. 13.385.6 × 100 =
  14. 14.39.06 ÷ 1000 =
  15. 15.15.06 ÷ 1000 =
  16. 16.322.1 × 1000 =
  17. 17.48.8 × 1000 =
  18. 18.206.9 ÷ 10 =
  19. 19.475.7 × 10 =
  20. 20.207.3 ÷ 1000 =
  21. 21.6.92 ÷ 1000 =
  22. 22.34.75 ÷ 10 =
  23. 23.95.1 × 1000 =
  24. 24.34.91 ÷ 1000 =
  25. 25.195.5 ÷ 10 =
  26. 26.174.2 × 10 =
  27. 27.4.7 × 1000 =
  28. 28.154.4 × 10 =
  29. 29.388.9 ÷ 10 =
  30. 30.145.4 × 100 =
  31. 31.14.75 × 100 =
  32. 32.93.5 ÷ 10 =
  33. 33.86.1 ÷ 1000 =
  34. 34.25.84 × 10 =
  35. 35.0.83 ÷ 100 =
  36. 36.36.87 ÷ 10 =
  37. 37.6.3 ÷ 10 =
  38. 38.49.28 × 1000 =
  39. 39.7.37 × 100 =
  40. 40.29.09 × 100 =

Answer key

  1. 0.731
  2. 1335
  3. 0.00752
  4. 1618
  5. 0.1116
  6. 36770
  7. 0.0321
  8. 1771
  9. 43.8
  10. 1501
  11. 21200
  12. 4.471
  13. 38560
  14. 0.03906
  15. 0.01506
  16. 322100
  17. 48800
  18. 20.69
  19. 4757
  20. 0.2073
  21. 0.00692
  22. 3.475
  23. 95100
  24. 0.03491
  25. 19.55
  26. 1742
  27. 4700
  28. 1544
  29. 38.89
  30. 14540
  31. 1475
  32. 9.35
  33. 0.0861
  34. 258.4
  35. 0.0083
  36. 3.687
  37. 0.63
  38. 49280
  39. 737
  40. 2909

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