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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 125 · 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. 1.6.42 × 10 =
  2. 2.451.8 × 100 =
  3. 3.47.34 ÷ 10 =
  4. 4.17.67 ÷ 100 =
  5. 5.46.83 ÷ 100 =
  6. 6.346.7 × 10 =
  7. 7.33.8 × 1000 =
  8. 8.3.15 ÷ 10 =
  9. 9.145.8 × 1000 =
  10. 10.49.92 × 10 =
  11. 11.3.9 × 10 =
  12. 12.17.87 ÷ 1000 =
  13. 13.11.74 × 10 =
  14. 14.0.83 ÷ 1000 =
  15. 15.8.89 × 1000 =
  16. 16.143.5 × 100 =
  17. 17.136.1 × 10 =
  18. 18.15.01 × 10 =
  19. 19.2.56 ÷ 100 =
  20. 20.39.2 ÷ 10 =
  21. 21.314.4 ÷ 100 =
  22. 22.25.11 × 100 =
  23. 23.274.1 ÷ 10 =
  24. 24.281.5 × 100 =
  25. 25.42.27 ÷ 10 =
  26. 26.25.24 ÷ 100 =
  27. 27.312.2 × 10 =
  28. 28.17.88 ÷ 1000 =
  29. 29.34.79 × 100 =
  30. 30.46.26 × 10 =
  31. 31.272.4 ÷ 10 =
  32. 32.111.3 × 1000 =
  33. 33.64.1 ÷ 10 =
  34. 34.435.4 × 1000 =
  35. 35.21.32 × 100 =
  36. 36.485.1 ÷ 1000 =
  37. 37.22.1 × 10 =
  38. 38.403.4 × 1000 =
  39. 39.298.6 × 1000 =
  40. 40.306.5 × 1000 =

Answer key

  1. 64.2
  2. 45180
  3. 4.734
  4. 0.1767
  5. 0.4683
  6. 3467
  7. 33800
  8. 0.315
  9. 145800
  10. 499.2
  11. 39
  12. 0.01787
  13. 117.4
  14. 0.00083
  15. 8890
  16. 14350
  17. 1361
  18. 150.1
  19. 0.0256
  20. 3.92
  21. 3.144
  22. 2511
  23. 27.41
  24. 28150
  25. 4.227
  26. 0.2524
  27. 3122
  28. 0.01788
  29. 3479
  30. 462.6
  31. 27.24
  32. 111300
  33. 6.41
  34. 435400
  35. 2132
  36. 0.4851
  37. 221
  38. 403400
  39. 298600
  40. 306500

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