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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 194 · 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. 1.319.4 × 1000 =
  2. 2.19.37 × 10 =
  3. 3.36.27 × 100 =
  4. 4.266.4 × 1000 =
  5. 5.367.1 × 1000 =
  6. 6.453.7 × 1000 =
  7. 7.403.1 ÷ 100 =
  8. 8.35.7 × 100 =
  9. 9.55.4 ÷ 100 =
  10. 10.18.93 ÷ 100 =
  11. 11.351.1 ÷ 100 =
  12. 12.88.5 × 10 =
  13. 13.45.37 ÷ 100 =
  14. 14.10.34 ÷ 100 =
  15. 15.451.2 × 1000 =
  16. 16.47.86 × 10 =
  17. 17.43.08 ÷ 10 =
  18. 18.37.9 ÷ 100 =
  19. 19.385.7 × 10 =
  20. 20.56.5 × 1000 =
  21. 21.1.8 ÷ 100 =
  22. 22.46.92 ÷ 1000 =
  23. 23.19.13 ÷ 100 =
  24. 24.409.5 ÷ 1000 =
  25. 25.446.1 × 10 =
  26. 26.20.71 × 1000 =
  27. 27.378.3 ÷ 100 =
  28. 28.8.28 ÷ 1000 =
  29. 29.133.8 ÷ 1000 =
  30. 30.22.7 × 100 =
  31. 31.22.29 × 1000 =
  32. 32.396.4 ÷ 10 =
  33. 33.1.03 ÷ 10 =
  34. 34.40.94 × 1000 =
  35. 35.19.3 × 100 =
  36. 36.324.5 × 100 =
  37. 37.226.6 × 10 =
  38. 38.380.5 × 1000 =
  39. 39.37.63 ÷ 1000 =
  40. 40.445.4 × 100 =

Answer key

  1. 319400
  2. 193.7
  3. 3627
  4. 266400
  5. 367100
  6. 453700
  7. 4.031
  8. 3570
  9. 0.554
  10. 0.1893
  11. 3.511
  12. 885
  13. 0.4537
  14. 0.1034
  15. 451200
  16. 478.6
  17. 4.308
  18. 0.379
  19. 3857
  20. 56500
  21. 0.018
  22. 0.04692
  23. 0.1913
  24. 0.4095
  25. 4461
  26. 20710
  27. 3.783
  28. 0.00828
  29. 0.1338
  30. 2270
  31. 22290
  32. 39.64
  33. 0.103
  34. 40940
  35. 1930
  36. 32450
  37. 2266
  38. 380500
  39. 0.03763
  40. 44540

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