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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 391 · 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. 1.22.8 ÷ 1000 =
  2. 2.114.4 ÷ 100 =
  3. 3.296.7 × 100 =
  4. 4.26.12 ÷ 10 =
  5. 5.421.2 ÷ 1000 =
  6. 6.434.2 ÷ 10 =
  7. 7.9.39 ÷ 1000 =
  8. 8.31.4 × 100 =
  9. 9.108.5 × 10 =
  10. 10.9.29 × 1000 =
  11. 11.39.51 × 1000 =
  12. 12.189.4 ÷ 10 =
  13. 13.50.4 × 1000 =
  14. 14.11.49 × 1000 =
  15. 15.40.21 × 10 =
  16. 16.4.85 ÷ 10 =
  17. 17.30.21 ÷ 10 =
  18. 18.206.7 × 10 =
  19. 19.459.9 ÷ 100 =
  20. 20.307.6 ÷ 10 =
  21. 21.416.7 × 10 =
  22. 22.367.8 × 100 =
  23. 23.44.6 ÷ 100 =
  24. 24.17.14 × 100 =
  25. 25.377.5 ÷ 10 =
  26. 26.34.46 × 10 =
  27. 27.24.31 ÷ 10 =
  28. 28.27.25 × 100 =
  29. 29.4.43 ÷ 10 =
  30. 30.42.63 × 1000 =
  31. 31.487.9 ÷ 10 =
  32. 32.21.51 ÷ 1000 =
  33. 33.286.1 ÷ 100 =
  34. 34.8.91 × 100 =
  35. 35.38.55 × 1000 =
  36. 36.40.51 ÷ 10 =
  37. 37.472.9 ÷ 100 =
  38. 38.10.02 × 100 =
  39. 39.27.51 ÷ 10 =
  40. 40.89.8 ÷ 10 =

Answer key

  1. 0.0228
  2. 1.144
  3. 29670
  4. 2.612
  5. 0.4212
  6. 43.42
  7. 0.00939
  8. 3140
  9. 1085
  10. 9290
  11. 39510
  12. 18.94
  13. 50400
  14. 11490
  15. 402.1
  16. 0.485
  17. 3.021
  18. 2067
  19. 4.599
  20. 30.76
  21. 4167
  22. 36780
  23. 0.446
  24. 1714
  25. 37.75
  26. 344.6
  27. 2.431
  28. 2725
  29. 0.443
  30. 42630
  31. 48.79
  32. 0.02151
  33. 2.861
  34. 891
  35. 38550
  36. 4.051
  37. 4.729
  38. 1002
  39. 2.751
  40. 8.98

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