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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 739 · 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. 1.17.24 × 100 =
  2. 2.35.91 ÷ 10 =
  3. 3.320.8 × 10 =
  4. 4.11.41 × 1000 =
  5. 5.0.38 × 10 =
  6. 6.16.95 ÷ 1000 =
  7. 7.233.6 × 100 =
  8. 8.5.55 ÷ 1000 =
  9. 9.377.7 × 10 =
  10. 10.4.71 × 100 =
  11. 11.2.34 × 10 =
  12. 12.5.71 ÷ 1000 =
  13. 13.242.9 × 10 =
  14. 14.382.9 × 10 =
  15. 15.5.73 ÷ 10 =
  16. 16.18.44 × 10 =
  17. 17.6.5 ÷ 100 =
  18. 18.342.2 × 1000 =
  19. 19.13.63 × 1000 =
  20. 20.405.5 × 10 =
  21. 21.48.95 × 100 =
  22. 22.215.3 × 1000 =
  23. 23.23.53 ÷ 10 =
  24. 24.37.8 ÷ 1000 =
  25. 25.324.6 ÷ 1000 =
  26. 26.313.5 ÷ 100 =
  27. 27.238.9 ÷ 100 =
  28. 28.118.5 × 10 =
  29. 29.179.5 ÷ 100 =
  30. 30.5.98 × 1000 =
  31. 31.30.12 ÷ 1000 =
  32. 32.203.6 ÷ 100 =
  33. 33.440.1 × 1000 =
  34. 34.17.56 ÷ 10 =
  35. 35.90.1 ÷ 1000 =
  36. 36.491.1 ÷ 100 =
  37. 37.403.2 × 10 =
  38. 38.16.59 × 1000 =
  39. 39.48.89 ÷ 10 =
  40. 40.6.07 × 10 =

Answer key

  1. 1724
  2. 3.591
  3. 3208
  4. 11410
  5. 3.8
  6. 0.01695
  7. 23360
  8. 0.00555
  9. 3777
  10. 471
  11. 23.4
  12. 0.00571
  13. 2429
  14. 3829
  15. 0.573
  16. 184.4
  17. 0.065
  18. 342200
  19. 13630
  20. 4055
  21. 4895
  22. 215300
  23. 2.353
  24. 0.0378
  25. 0.3246
  26. 3.135
  27. 2.389
  28. 1185
  29. 1.795
  30. 5980
  31. 0.03012
  32. 2.036
  33. 440100
  34. 1.756
  35. 0.0901
  36. 4.911
  37. 4032
  38. 16590
  39. 4.889
  40. 60.7

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