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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 185 · 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. 1.5.04 ÷ 1000 =
  2. 2.38.64 ÷ 10 =
  3. 3.6.09 × 100 =
  4. 4.276.5 ÷ 100 =
  5. 5.21.54 ÷ 100 =
  6. 6.38.01 × 1000 =
  7. 7.390.3 ÷ 1000 =
  8. 8.403.5 × 100 =
  9. 9.90.5 ÷ 10 =
  10. 10.271.3 × 10 =
  11. 11.430.9 × 10 =
  12. 12.400.8 × 1000 =
  13. 13.175.2 ÷ 100 =
  14. 14.37.95 × 100 =
  15. 15.5.89 × 1000 =
  16. 16.21.93 ÷ 100 =
  17. 17.178.9 × 10 =
  18. 18.30.17 × 1000 =
  19. 19.200.4 ÷ 100 =
  20. 20.494.9 ÷ 10 =
  21. 21.29.72 × 10 =
  22. 22.1.87 × 1000 =
  23. 23.139.8 × 100 =
  24. 24.94.9 ÷ 1000 =
  25. 25.248.2 ÷ 1000 =
  26. 26.6.77 ÷ 100 =
  27. 27.476.7 ÷ 1000 =
  28. 28.43.25 ÷ 1000 =
  29. 29.41.4 ÷ 100 =
  30. 30.31.54 ÷ 1000 =
  31. 31.39.98 ÷ 100 =
  32. 32.6.3 × 1000 =
  33. 33.266.6 ÷ 100 =
  34. 34.22.46 × 10 =
  35. 35.25.2 ÷ 1000 =
  36. 36.401.6 × 100 =
  37. 37.3.13 ÷ 100 =
  38. 38.0.91 × 1000 =
  39. 39.349.5 × 1000 =
  40. 40.74.6 ÷ 100 =

Answer key

  1. 0.00504
  2. 3.864
  3. 609
  4. 2.765
  5. 0.2154
  6. 38010
  7. 0.3903
  8. 40350
  9. 9.05
  10. 2713
  11. 4309
  12. 400800
  13. 1.752
  14. 3795
  15. 5890
  16. 0.2193
  17. 1789
  18. 30170
  19. 2.004
  20. 49.49
  21. 297.2
  22. 1870
  23. 13980
  24. 0.0949
  25. 0.2482
  26. 0.0677
  27. 0.4767
  28. 0.04325
  29. 0.414
  30. 0.03154
  31. 0.3998
  32. 6300
  33. 2.666
  34. 224.6
  35. 0.0252
  36. 40160
  37. 0.0313
  38. 910
  39. 349500
  40. 0.746

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