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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 910 · 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. 1.1.38 ÷ 10 =
  2. 2.243.9 ÷ 10 =
  3. 3.2.25 × 1000 =
  4. 4.27.54 ÷ 100 =
  5. 5.229.3 ÷ 1000 =
  6. 6.72.8 × 100 =
  7. 7.0.76 ÷ 100 =
  8. 8.21.03 ÷ 10 =
  9. 9.5.04 ÷ 100 =
  10. 10.419.1 ÷ 10 =
  11. 11.23.71 ÷ 100 =
  12. 12.18.48 × 100 =
  13. 13.23.77 ÷ 10 =
  14. 14.20.53 ÷ 100 =
  15. 15.1.79 × 10 =
  16. 16.113.2 × 100 =
  17. 17.160.7 ÷ 10 =
  18. 18.62.5 ÷ 10 =
  19. 19.10.31 × 100 =
  20. 20.55.4 ÷ 100 =
  21. 21.35.94 × 10 =
  22. 22.71.1 ÷ 10 =
  23. 23.14.31 ÷ 1000 =
  24. 24.36.03 × 1000 =
  25. 25.44.29 × 10 =
  26. 26.359.5 ÷ 1000 =
  27. 27.187.9 ÷ 1000 =
  28. 28.279.9 ÷ 10 =
  29. 29.392.1 ÷ 100 =
  30. 30.28.09 ÷ 1000 =
  31. 31.9.61 ÷ 1000 =
  32. 32.274.6 ÷ 100 =
  33. 33.6.07 × 100 =
  34. 34.497.4 × 10 =
  35. 35.411.8 × 1000 =
  36. 36.4.31 × 10 =
  37. 37.38.71 ÷ 10 =
  38. 38.202.6 × 1000 =
  39. 39.494.5 × 10 =
  40. 40.479.3 × 100 =

Answer key

  1. 0.138
  2. 24.39
  3. 2250
  4. 0.2754
  5. 0.2293
  6. 7280
  7. 0.0076
  8. 2.103
  9. 0.0504
  10. 41.91
  11. 0.2371
  12. 1848
  13. 2.377
  14. 0.2053
  15. 17.9
  16. 11320
  17. 16.07
  18. 6.25
  19. 1031
  20. 0.554
  21. 359.4
  22. 7.11
  23. 0.01431
  24. 36030
  25. 442.9
  26. 0.3595
  27. 0.1879
  28. 27.99
  29. 3.921
  30. 0.02809
  31. 0.00961
  32. 2.746
  33. 607
  34. 4974
  35. 411800
  36. 43.1
  37. 3.871
  38. 202600
  39. 4945
  40. 47930

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