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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 814 · 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. 1.339.7 ÷ 10 =
  2. 2.241.2 ÷ 1000 =
  3. 3.19.8 × 10 =
  4. 4.202.1 ÷ 100 =
  5. 5.382.4 ÷ 1000 =
  6. 6.421.7 ÷ 10 =
  7. 7.18.46 ÷ 1000 =
  8. 8.32.79 × 100 =
  9. 9.37.25 ÷ 10 =
  10. 10.30.06 ÷ 100 =
  11. 11.282.4 × 1000 =
  12. 12.129.9 × 100 =
  13. 13.356.6 × 100 =
  14. 14.15.36 × 100 =
  15. 15.266.2 ÷ 10 =
  16. 16.129.4 × 10 =
  17. 17.4.41 ÷ 100 =
  18. 18.45.04 × 1000 =
  19. 19.21.53 × 1000 =
  20. 20.236.1 ÷ 100 =
  21. 21.12.63 × 10 =
  22. 22.4.65 × 100 =
  23. 23.430.4 ÷ 100 =
  24. 24.46.51 ÷ 100 =
  25. 25.399.8 × 10 =
  26. 26.75.9 × 100 =
  27. 27.1.85 ÷ 1000 =
  28. 28.49.65 ÷ 1000 =
  29. 29.12.35 × 1000 =
  30. 30.465.2 ÷ 1000 =
  31. 31.417.5 ÷ 10 =
  32. 32.10.28 × 10 =
  33. 33.25.63 × 10 =
  34. 34.12.34 ÷ 1000 =
  35. 35.36.18 × 1000 =
  36. 36.30.55 × 1000 =
  37. 37.14.67 ÷ 100 =
  38. 38.38.72 × 1000 =
  39. 39.227.6 × 10 =
  40. 40.12.28 × 1000 =

Answer key

  1. 33.97
  2. 0.2412
  3. 198
  4. 2.021
  5. 0.3824
  6. 42.17
  7. 0.01846
  8. 3279
  9. 3.725
  10. 0.3006
  11. 282400
  12. 12990
  13. 35660
  14. 1536
  15. 26.62
  16. 1294
  17. 0.0441
  18. 45040
  19. 21530
  20. 2.361
  21. 126.3
  22. 465
  23. 4.304
  24. 0.4651
  25. 3998
  26. 7590
  27. 0.00185
  28. 0.04965
  29. 12350
  30. 0.4652
  31. 41.75
  32. 102.8
  33. 256.3
  34. 0.01234
  35. 36180
  36. 30550
  37. 0.1467
  38. 38720
  39. 2276
  40. 12280

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