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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 687 · 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. 1.466.5 × 1000 =
  2. 2.33.42 × 10 =
  3. 3.24.81 × 10 =
  4. 4.16.85 × 10 =
  5. 5.468.7 × 10 =
  6. 6.4.03 ÷ 100 =
  7. 7.406.2 ÷ 100 =
  8. 8.107.8 × 100 =
  9. 9.5.75 × 1000 =
  10. 10.446.6 ÷ 1000 =
  11. 11.13.82 ÷ 1000 =
  12. 12.477.8 × 100 =
  13. 13.499.9 ÷ 10 =
  14. 14.101.6 × 1000 =
  15. 15.258.9 × 10 =
  16. 16.95.9 × 1000 =
  17. 17.486.1 × 100 =
  18. 18.117.7 ÷ 10 =
  19. 19.128.4 ÷ 1000 =
  20. 20.410.8 ÷ 10 =
  21. 21.39.89 × 100 =
  22. 22.131.3 × 10 =
  23. 23.5.73 × 10 =
  24. 24.38.87 × 1000 =
  25. 25.55.2 × 10 =
  26. 26.374.3 × 100 =
  27. 27.79.9 ÷ 100 =
  28. 28.3.4 ÷ 1000 =
  29. 29.123.8 ÷ 1000 =
  30. 30.276.9 × 10 =
  31. 31.494.2 × 100 =
  32. 32.438.8 ÷ 10 =
  33. 33.61.1 × 1000 =
  34. 34.144.3 × 100 =
  35. 35.86.1 × 10 =
  36. 36.114.8 ÷ 100 =
  37. 37.468.1 ÷ 1000 =
  38. 38.100.9 ÷ 10 =
  39. 39.348.2 × 1000 =
  40. 40.55.1 ÷ 1000 =

Answer key

  1. 466500
  2. 334.2
  3. 248.1
  4. 168.5
  5. 4687
  6. 0.0403
  7. 4.062
  8. 10780
  9. 5750
  10. 0.4466
  11. 0.01382
  12. 47780
  13. 49.99
  14. 101600
  15. 2589
  16. 95900
  17. 48610
  18. 11.77
  19. 0.1284
  20. 41.08
  21. 3989
  22. 1313
  23. 57.3
  24. 38870
  25. 552
  26. 37430
  27. 0.799
  28. 0.0034
  29. 0.1238
  30. 2769
  31. 49420
  32. 43.88
  33. 61100
  34. 14430
  35. 861
  36. 1.148
  37. 0.4681
  38. 10.09
  39. 348200
  40. 0.0551

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