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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 997 · 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. 1.48.93 × 1000 =
  2. 2.29.52 ÷ 10 =
  3. 3.321.8 × 10 =
  4. 4.470.5 × 100 =
  5. 5.9.02 × 10 =
  6. 6.164.7 ÷ 1000 =
  7. 7.46.14 × 1000 =
  8. 8.459.8 ÷ 10 =
  9. 9.463.1 ÷ 1000 =
  10. 10.44.05 × 1000 =
  11. 11.6.5 × 10 =
  12. 12.19.13 × 10 =
  13. 13.489.4 × 100 =
  14. 14.216.8 × 100 =
  15. 15.38.53 × 10 =
  16. 16.42.48 × 1000 =
  17. 17.393.4 × 1000 =
  18. 18.6.01 ÷ 10 =
  19. 19.1.26 ÷ 10 =
  20. 20.0.82 × 1000 =
  21. 21.273.7 × 1000 =
  22. 22.98.1 ÷ 1000 =
  23. 23.346.6 × 1000 =
  24. 24.45.46 ÷ 1000 =
  25. 25.47.97 ÷ 10 =
  26. 26.220.5 × 1000 =
  27. 27.46.9 × 10 =
  28. 28.303.3 × 100 =
  29. 29.181.1 × 1000 =
  30. 30.44.01 × 10 =
  31. 31.28.91 ÷ 1000 =
  32. 32.38.28 × 100 =
  33. 33.319.2 × 100 =
  34. 34.433.3 × 100 =
  35. 35.442.5 × 1000 =
  36. 36.41.55 × 10 =
  37. 37.30.22 ÷ 1000 =
  38. 38.7.32 ÷ 1000 =
  39. 39.493.2 × 100 =
  40. 40.14.37 ÷ 1000 =

Answer key

  1. 48930
  2. 2.952
  3. 3218
  4. 47050
  5. 90.2
  6. 0.1647
  7. 46140
  8. 45.98
  9. 0.4631
  10. 44050
  11. 65
  12. 191.3
  13. 48940
  14. 21680
  15. 385.3
  16. 42480
  17. 393400
  18. 0.601
  19. 0.126
  20. 820
  21. 273700
  22. 0.0981
  23. 346600
  24. 0.04546
  25. 4.797
  26. 220500
  27. 469
  28. 30330
  29. 181100
  30. 440.1
  31. 0.02891
  32. 3828
  33. 31920
  34. 43330
  35. 442500
  36. 415.5
  37. 0.03022
  38. 0.00732
  39. 49320
  40. 0.01437

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