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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 503 · 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. 1.209.5 ÷ 1000 =
  2. 2.261.1 ÷ 100 =
  3. 3.175.8 ÷ 100 =
  4. 4.238.4 ÷ 1000 =
  5. 5.68.6 × 1000 =
  6. 6.395.4 × 100 =
  7. 7.137.3 ÷ 10 =
  8. 8.28.73 × 100 =
  9. 9.5.16 × 10 =
  10. 10.15.87 ÷ 1000 =
  11. 11.227.2 ÷ 100 =
  12. 12.20.41 × 100 =
  13. 13.36.2 × 10 =
  14. 14.179.7 ÷ 100 =
  15. 15.251.6 ÷ 1000 =
  16. 16.416.7 × 10 =
  17. 17.314.2 × 1000 =
  18. 18.14.16 ÷ 100 =
  19. 19.33.1 × 10 =
  20. 20.14.42 ÷ 10 =
  21. 21.40.19 ÷ 100 =
  22. 22.9.91 ÷ 100 =
  23. 23.40.79 ÷ 10 =
  24. 24.137.6 ÷ 10 =
  25. 25.138.1 ÷ 100 =
  26. 26.39.03 × 100 =
  27. 27.481.2 ÷ 100 =
  28. 28.48.12 × 10 =
  29. 29.18.79 × 100 =
  30. 30.14.01 ÷ 100 =
  31. 31.1.42 ÷ 1000 =
  32. 32.274.3 × 100 =
  33. 33.39.68 × 10 =
  34. 34.112.1 × 100 =
  35. 35.244.3 × 1000 =
  36. 36.26.81 × 1000 =
  37. 37.42.7 × 10 =
  38. 38.68.9 × 10 =
  39. 39.45.84 × 10 =
  40. 40.121.7 ÷ 100 =

Answer key

  1. 0.2095
  2. 2.611
  3. 1.758
  4. 0.2384
  5. 68600
  6. 39540
  7. 13.73
  8. 2873
  9. 51.6
  10. 0.01587
  11. 2.272
  12. 2041
  13. 362
  14. 1.797
  15. 0.2516
  16. 4167
  17. 314200
  18. 0.1416
  19. 331
  20. 1.442
  21. 0.4019
  22. 0.0991
  23. 4.079
  24. 13.76
  25. 1.381
  26. 3903
  27. 4.812
  28. 481.2
  29. 1879
  30. 0.1401
  31. 0.00142
  32. 27430
  33. 396.8
  34. 11210
  35. 244300
  36. 26810
  37. 427
  38. 689
  39. 458.4
  40. 1.217

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