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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 212 · 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. 1.298.1 × 10 =
  2. 2.34.6 ÷ 1000 =
  3. 3.10.2 ÷ 1000 =
  4. 4.6.58 × 100 =
  5. 5.244.1 × 1000 =
  6. 6.423.8 × 10 =
  7. 7.38.61 ÷ 100 =
  8. 8.361.2 × 1000 =
  9. 9.118.3 ÷ 10 =
  10. 10.497.7 × 10 =
  11. 11.21.6 ÷ 10 =
  12. 12.202.4 × 1000 =
  13. 13.43.4 ÷ 10 =
  14. 14.7.35 ÷ 100 =
  15. 15.42.94 ÷ 10 =
  16. 16.187.4 × 10 =
  17. 17.12.58 ÷ 100 =
  18. 18.426.5 ÷ 10 =
  19. 19.24.01 × 1000 =
  20. 20.30.93 ÷ 1000 =
  21. 21.32.34 ÷ 1000 =
  22. 22.67.1 × 100 =
  23. 23.369.4 ÷ 10 =
  24. 24.48.1 ÷ 100 =
  25. 25.102.8 ÷ 100 =
  26. 26.5.58 × 100 =
  27. 27.34.89 ÷ 10 =
  28. 28.489.1 × 10 =
  29. 29.6.9 ÷ 100 =
  30. 30.44.3 × 10 =
  31. 31.46.49 ÷ 10 =
  32. 32.128.1 × 100 =
  33. 33.42.94 ÷ 100 =
  34. 34.61.5 ÷ 1000 =
  35. 35.2.49 ÷ 100 =
  36. 36.29.76 × 10 =
  37. 37.19.04 × 10 =
  38. 38.25.63 × 10 =
  39. 39.44.39 × 100 =
  40. 40.16.83 × 100 =

Answer key

  1. 2981
  2. 0.0346
  3. 0.0102
  4. 658
  5. 244100
  6. 4238
  7. 0.3861
  8. 361200
  9. 11.83
  10. 4977
  11. 2.16
  12. 202400
  13. 4.34
  14. 0.0735
  15. 4.294
  16. 1874
  17. 0.1258
  18. 42.65
  19. 24010
  20. 0.03093
  21. 0.03234
  22. 6710
  23. 36.94
  24. 0.481
  25. 1.028
  26. 558
  27. 3.489
  28. 4891
  29. 0.069
  30. 443
  31. 4.649
  32. 12810
  33. 0.4294
  34. 0.0615
  35. 0.0249
  36. 297.6
  37. 190.4
  38. 256.3
  39. 4439
  40. 1683

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