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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 232 · 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. 1.148.1 ÷ 1000 =
  2. 2.28.91 × 100 =
  3. 3.1.91 ÷ 100 =
  4. 4.90.1 × 1000 =
  5. 5.316.6 × 100 =
  6. 6.8.8 × 1000 =
  7. 7.24.72 ÷ 10 =
  8. 8.15.39 × 100 =
  9. 9.168.2 × 100 =
  10. 10.13.93 ÷ 100 =
  11. 11.20.44 ÷ 10 =
  12. 12.129.1 × 100 =
  13. 13.12.31 × 1000 =
  14. 14.45.64 × 100 =
  15. 15.105.3 × 10 =
  16. 16.33.72 × 1000 =
  17. 17.42.96 ÷ 10 =
  18. 18.409.8 × 1000 =
  19. 19.43.1 ÷ 100 =
  20. 20.30.82 × 10 =
  21. 21.421.1 × 100 =
  22. 22.389.9 ÷ 10 =
  23. 23.186.1 ÷ 10 =
  24. 24.152.1 × 10 =
  25. 25.5.62 × 100 =
  26. 26.41.67 ÷ 100 =
  27. 27.2.22 ÷ 1000 =
  28. 28.336.9 ÷ 10 =
  29. 29.263.4 ÷ 1000 =
  30. 30.9.09 × 10 =
  31. 31.135.9 ÷ 1000 =
  32. 32.4.74 × 100 =
  33. 33.14.26 × 10 =
  34. 34.13.28 ÷ 10 =
  35. 35.48.49 × 1000 =
  36. 36.131.1 × 1000 =
  37. 37.301.1 × 1000 =
  38. 38.33.81 × 1000 =
  39. 39.339.5 ÷ 10 =
  40. 40.2.02 ÷ 100 =

Answer key

  1. 0.1481
  2. 2891
  3. 0.0191
  4. 90100
  5. 31660
  6. 8800
  7. 2.472
  8. 1539
  9. 16820
  10. 0.1393
  11. 2.044
  12. 12910
  13. 12310
  14. 4564
  15. 1053
  16. 33720
  17. 4.296
  18. 409800
  19. 0.431
  20. 308.2
  21. 42110
  22. 38.99
  23. 18.61
  24. 1521
  25. 562
  26. 0.4167
  27. 0.00222
  28. 33.69
  29. 0.2634
  30. 90.9
  31. 0.1359
  32. 474
  33. 142.6
  34. 1.328
  35. 48490
  36. 131100
  37. 301100
  38. 33810
  39. 33.95
  40. 0.0202

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