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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 360 · 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. 1.3.92 ÷ 10 =
  2. 2.459.8 ÷ 10 =
  3. 3.117.1 ÷ 100 =
  4. 4.15.58 × 10 =
  5. 5.463.1 ÷ 100 =
  6. 6.365.1 × 10 =
  7. 7.43.13 ÷ 10 =
  8. 8.20.04 × 1000 =
  9. 9.163.2 ÷ 1000 =
  10. 10.26.25 × 100 =
  11. 11.57.9 ÷ 1000 =
  12. 12.106.5 × 1000 =
  13. 13.443.2 × 1000 =
  14. 14.203.1 × 10 =
  15. 15.471.9 × 1000 =
  16. 16.404.4 ÷ 100 =
  17. 17.4.12 × 1000 =
  18. 18.34.18 × 1000 =
  19. 19.19.02 × 100 =
  20. 20.120.9 ÷ 10 =
  21. 21.309.8 × 10 =
  22. 22.337.7 ÷ 10 =
  23. 23.484.6 × 1000 =
  24. 24.295.2 ÷ 100 =
  25. 25.79.6 ÷ 10 =
  26. 26.9.91 ÷ 100 =
  27. 27.8.05 ÷ 10 =
  28. 28.24.21 ÷ 1000 =
  29. 29.110.5 × 1000 =
  30. 30.8.87 ÷ 1000 =
  31. 31.36.68 ÷ 100 =
  32. 32.38.11 ÷ 100 =
  33. 33.197.1 ÷ 100 =
  34. 34.175.9 ÷ 100 =
  35. 35.338.4 × 1000 =
  36. 36.420.3 ÷ 1000 =
  37. 37.244.3 ÷ 10 =
  38. 38.335.8 ÷ 10 =
  39. 39.40.48 ÷ 10 =
  40. 40.57.9 × 100 =

Answer key

  1. 0.392
  2. 45.98
  3. 1.171
  4. 155.8
  5. 4.631
  6. 3651
  7. 4.313
  8. 20040
  9. 0.1632
  10. 2625
  11. 0.0579
  12. 106500
  13. 443200
  14. 2031
  15. 471900
  16. 4.044
  17. 4120
  18. 34180
  19. 1902
  20. 12.09
  21. 3098
  22. 33.77
  23. 484600
  24. 2.952
  25. 7.96
  26. 0.0991
  27. 0.805
  28. 0.02421
  29. 110500
  30. 0.00887
  31. 0.3668
  32. 0.3811
  33. 1.971
  34. 1.759
  35. 338400
  36. 0.4203
  37. 24.43
  38. 33.58
  39. 4.048
  40. 5790

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