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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 927 · 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. 1.39.11 × 100 =
  2. 2.76.8 ÷ 10 =
  3. 3.25.47 × 10 =
  4. 4.296.2 ÷ 10 =
  5. 5.107.5 ÷ 100 =
  6. 6.14.99 ÷ 100 =
  7. 7.278.8 × 1000 =
  8. 8.243.1 × 1000 =
  9. 9.39.9 ÷ 100 =
  10. 10.470.6 × 10 =
  11. 11.209.3 × 100 =
  12. 12.48.54 ÷ 10 =
  13. 13.292.8 × 10 =
  14. 14.8.49 × 100 =
  15. 15.199.8 × 10 =
  16. 16.328.6 × 10 =
  17. 17.6.52 ÷ 100 =
  18. 18.44.01 × 100 =
  19. 19.265.8 × 1000 =
  20. 20.432.8 ÷ 10 =
  21. 21.294.5 × 100 =
  22. 22.387.7 ÷ 10 =
  23. 23.270.6 × 1000 =
  24. 24.266.9 × 1000 =
  25. 25.4.56 ÷ 1000 =
  26. 26.357.1 ÷ 100 =
  27. 27.212.3 × 10 =
  28. 28.338.4 × 10 =
  29. 29.1.46 × 10 =
  30. 30.2.96 ÷ 10 =
  31. 31.48.77 × 10 =
  32. 32.4.91 × 100 =
  33. 33.18.18 × 10 =
  34. 34.453.9 ÷ 1000 =
  35. 35.117.6 ÷ 100 =
  36. 36.28.6 ÷ 10 =
  37. 37.20.52 ÷ 1000 =
  38. 38.483.1 ÷ 10 =
  39. 39.157.4 × 100 =
  40. 40.4.7 ÷ 1000 =

Answer key

  1. 3911
  2. 7.68
  3. 254.7
  4. 29.62
  5. 1.075
  6. 0.1499
  7. 278800
  8. 243100
  9. 0.399
  10. 4706
  11. 20930
  12. 4.854
  13. 2928
  14. 849
  15. 1998
  16. 3286
  17. 0.0652
  18. 4401
  19. 265800
  20. 43.28
  21. 29450
  22. 38.77
  23. 270600
  24. 266900
  25. 0.00456
  26. 3.571
  27. 2123
  28. 3384
  29. 14.6
  30. 0.296
  31. 487.7
  32. 491
  33. 181.8
  34. 0.4539
  35. 1.176
  36. 2.86
  37. 0.02052
  38. 48.31
  39. 15740
  40. 0.0047

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