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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 771 · 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. 1.47.8 ÷ 100 =
  2. 2.5.68 × 1000 =
  3. 3.265.4 ÷ 100 =
  4. 4.241.9 × 100 =
  5. 5.201.9 ÷ 100 =
  6. 6.273.7 × 10 =
  7. 7.386.2 ÷ 1000 =
  8. 8.15.18 ÷ 1000 =
  9. 9.186.7 × 1000 =
  10. 10.2.32 ÷ 100 =
  11. 11.39.09 × 10 =
  12. 12.127.9 × 10 =
  13. 13.428.1 × 100 =
  14. 14.270.6 × 10 =
  15. 15.45.16 ÷ 1000 =
  16. 16.157.8 × 1000 =
  17. 17.13.95 ÷ 1000 =
  18. 18.17.01 ÷ 10 =
  19. 19.401.5 × 100 =
  20. 20.353.2 × 1000 =
  21. 21.28.54 × 1000 =
  22. 22.21.66 × 100 =
  23. 23.19.7 × 1000 =
  24. 24.105.2 ÷ 10 =
  25. 25.15.91 ÷ 100 =
  26. 26.15.25 ÷ 10 =
  27. 27.27.01 ÷ 10 =
  28. 28.252.5 ÷ 10 =
  29. 29.11.92 ÷ 10 =
  30. 30.14.74 × 1000 =
  31. 31.352.7 × 100 =
  32. 32.27.7 ÷ 10 =
  33. 33.453.4 × 10 =
  34. 34.321.8 ÷ 100 =
  35. 35.13.96 ÷ 1000 =
  36. 36.36.57 × 1000 =
  37. 37.8.1 ÷ 10 =
  38. 38.421.1 × 1000 =
  39. 39.110.1 × 1000 =
  40. 40.286.5 ÷ 10 =

Answer key

  1. 0.478
  2. 5680
  3. 2.654
  4. 24190
  5. 2.019
  6. 2737
  7. 0.3862
  8. 0.01518
  9. 186700
  10. 0.0232
  11. 390.9
  12. 1279
  13. 42810
  14. 2706
  15. 0.04516
  16. 157800
  17. 0.01395
  18. 1.701
  19. 40150
  20. 353200
  21. 28540
  22. 2166
  23. 19700
  24. 10.52
  25. 0.1591
  26. 1.525
  27. 2.701
  28. 25.25
  29. 1.192
  30. 14740
  31. 35270
  32. 2.77
  33. 4534
  34. 3.218
  35. 0.01396
  36. 36570
  37. 0.81
  38. 421100
  39. 110100
  40. 28.65

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