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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 973 · 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. 1.5.29 × 10 =
  2. 2.404.9 ÷ 100 =
  3. 3.27.51 × 100 =
  4. 4.440.2 ÷ 100 =
  5. 5.49.26 ÷ 1000 =
  6. 6.24.52 × 10 =
  7. 7.127.8 ÷ 10 =
  8. 8.25.49 ÷ 1000 =
  9. 9.12.81 ÷ 10 =
  10. 10.15.56 ÷ 10 =
  11. 11.24.31 × 10 =
  12. 12.4.34 × 1000 =
  13. 13.7.31 × 1000 =
  14. 14.122.7 ÷ 100 =
  15. 15.21.05 ÷ 10 =
  16. 16.67.5 ÷ 1000 =
  17. 17.122.6 ÷ 100 =
  18. 18.365.5 ÷ 100 =
  19. 19.97.5 × 100 =
  20. 20.5.53 ÷ 100 =
  21. 21.17.72 ÷ 1000 =
  22. 22.224.2 ÷ 10 =
  23. 23.445.8 ÷ 100 =
  24. 24.118.2 ÷ 10 =
  25. 25.25.25 × 10 =
  26. 26.19.82 × 10 =
  27. 27.453.7 × 10 =
  28. 28.35.84 × 10 =
  29. 29.8.86 × 100 =
  30. 30.38.49 × 10 =
  31. 31.102.2 ÷ 10 =
  32. 32.36.25 × 10 =
  33. 33.95.8 ÷ 100 =
  34. 34.9.18 × 1000 =
  35. 35.236.6 × 100 =
  36. 36.142.7 ÷ 100 =
  37. 37.43.46 × 100 =
  38. 38.119.1 ÷ 1000 =
  39. 39.145.8 ÷ 100 =
  40. 40.439.6 ÷ 100 =

Answer key

  1. 52.9
  2. 4.049
  3. 2751
  4. 4.402
  5. 0.04926
  6. 245.2
  7. 12.78
  8. 0.02549
  9. 1.281
  10. 1.556
  11. 243.1
  12. 4340
  13. 7310
  14. 1.227
  15. 2.105
  16. 0.0675
  17. 1.226
  18. 3.655
  19. 9750
  20. 0.0553
  21. 0.01772
  22. 22.42
  23. 4.458
  24. 11.82
  25. 252.5
  26. 198.2
  27. 4537
  28. 358.4
  29. 886
  30. 384.9
  31. 10.22
  32. 362.5
  33. 0.958
  34. 9180
  35. 23660
  36. 1.427
  37. 4346
  38. 0.1191
  39. 1.458
  40. 4.396

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