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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 728 · 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. 1.18.81 ÷ 100 =
  2. 2.347.5 ÷ 10 =
  3. 3.382.9 ÷ 1000 =
  4. 4.22.56 ÷ 10 =
  5. 5.24.32 × 100 =
  6. 6.45.05 × 10 =
  7. 7.19.37 × 100 =
  8. 8.45.38 ÷ 100 =
  9. 9.12.45 × 1000 =
  10. 10.20.13 × 10 =
  11. 11.129.5 ÷ 100 =
  12. 12.32.06 × 10 =
  13. 13.249.7 × 100 =
  14. 14.245.3 ÷ 1000 =
  15. 15.7.03 ÷ 100 =
  16. 16.14.41 ÷ 10 =
  17. 17.3.84 ÷ 10 =
  18. 18.190.1 ÷ 1000 =
  19. 19.35.7 ÷ 100 =
  20. 20.334.3 × 10 =
  21. 21.47.95 ÷ 1000 =
  22. 22.27.29 ÷ 1000 =
  23. 23.472.7 × 100 =
  24. 24.20.68 × 1000 =
  25. 25.199.5 ÷ 10 =
  26. 26.342.3 × 10 =
  27. 27.49.51 ÷ 10 =
  28. 28.30.18 ÷ 10 =
  29. 29.386.7 × 10 =
  30. 30.47.61 × 100 =
  31. 31.17.05 ÷ 1000 =
  32. 32.38.31 × 1000 =
  33. 33.36.19 ÷ 1000 =
  34. 34.11.1 ÷ 10 =
  35. 35.422.1 ÷ 10 =
  36. 36.191.9 × 1000 =
  37. 37.3.88 ÷ 1000 =
  38. 38.17.86 ÷ 1000 =
  39. 39.5.91 × 10 =
  40. 40.271.8 × 1000 =

Answer key

  1. 0.1881
  2. 34.75
  3. 0.3829
  4. 2.256
  5. 2432
  6. 450.5
  7. 1937
  8. 0.4538
  9. 12450
  10. 201.3
  11. 1.295
  12. 320.6
  13. 24970
  14. 0.2453
  15. 0.0703
  16. 1.441
  17. 0.384
  18. 0.1901
  19. 0.357
  20. 3343
  21. 0.04795
  22. 0.02729
  23. 47270
  24. 20680
  25. 19.95
  26. 3423
  27. 4.951
  28. 3.018
  29. 3867
  30. 4761
  31. 0.01705
  32. 38310
  33. 0.03619
  34. 1.11
  35. 42.21
  36. 191900
  37. 0.00388
  38. 0.01786
  39. 59.1
  40. 271800

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