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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 459 · 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. 1.91.4 ÷ 10 =
  2. 2.249.2 ÷ 10 =
  3. 3.28.51 ÷ 100 =
  4. 4.42.16 × 100 =
  5. 5.12.33 × 100 =
  6. 6.29.08 × 1000 =
  7. 7.337.8 × 1000 =
  8. 8.397.9 × 100 =
  9. 9.5.14 ÷ 10 =
  10. 10.13.38 ÷ 100 =
  11. 11.45.68 × 10 =
  12. 12.301.1 × 100 =
  13. 13.10.57 ÷ 1000 =
  14. 14.218.7 ÷ 100 =
  15. 15.383.5 ÷ 100 =
  16. 16.14.29 × 1000 =
  17. 17.13.11 × 100 =
  18. 18.426.4 × 1000 =
  19. 19.329.8 × 10 =
  20. 20.442.1 ÷ 1000 =
  21. 21.261.5 × 1000 =
  22. 22.102.7 × 100 =
  23. 23.313.2 × 10 =
  24. 24.438.8 ÷ 100 =
  25. 25.488.9 ÷ 10 =
  26. 26.102.9 × 100 =
  27. 27.283.8 ÷ 1000 =
  28. 28.253.3 ÷ 100 =
  29. 29.21.75 × 10 =
  30. 30.347.3 ÷ 10 =
  31. 31.16.87 × 100 =
  32. 32.2.36 × 1000 =
  33. 33.25.64 × 1000 =
  34. 34.429.7 ÷ 10 =
  35. 35.125.8 ÷ 1000 =
  36. 36.17.26 × 100 =
  37. 37.235.8 × 10 =
  38. 38.23.46 × 100 =
  39. 39.132.8 ÷ 100 =
  40. 40.18.22 × 100 =

Answer key

  1. 9.14
  2. 24.92
  3. 0.2851
  4. 4216
  5. 1233
  6. 29080
  7. 337800
  8. 39790
  9. 0.514
  10. 0.1338
  11. 456.8
  12. 30110
  13. 0.01057
  14. 2.187
  15. 3.835
  16. 14290
  17. 1311
  18. 426400
  19. 3298
  20. 0.4421
  21. 261500
  22. 10270
  23. 3132
  24. 4.388
  25. 48.89
  26. 10290
  27. 0.2838
  28. 2.533
  29. 217.5
  30. 34.73
  31. 1687
  32. 2360
  33. 25640
  34. 42.97
  35. 0.1258
  36. 1726
  37. 2358
  38. 2346
  39. 1.328
  40. 1822

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