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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 406 · 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. 1.4.57 × 1000 =
  2. 2.244.4 × 10 =
  3. 3.113.7 ÷ 10 =
  4. 4.30.78 × 10 =
  5. 5.122.9 ÷ 1000 =
  6. 6.48.11 ÷ 100 =
  7. 7.2.61 × 100 =
  8. 8.49.99 × 100 =
  9. 9.20.15 × 1000 =
  10. 10.271.6 × 10 =
  11. 11.19.45 ÷ 10 =
  12. 12.37.59 × 100 =
  13. 13.16.02 × 1000 =
  14. 14.48.76 ÷ 10 =
  15. 15.41.52 × 1000 =
  16. 16.123.2 × 10 =
  17. 17.18.15 × 10 =
  18. 18.214.7 ÷ 100 =
  19. 19.12.36 × 10 =
  20. 20.35.47 ÷ 1000 =
  21. 21.395.5 ÷ 100 =
  22. 22.458.1 ÷ 1000 =
  23. 23.92.7 × 1000 =
  24. 24.5.55 × 100 =
  25. 25.78.9 ÷ 10 =
  26. 26.1.8 × 1000 =
  27. 27.11.39 × 10 =
  28. 28.26.45 × 1000 =
  29. 29.183.1 × 10 =
  30. 30.35.65 × 100 =
  31. 31.448.2 × 1000 =
  32. 32.24.28 × 10 =
  33. 33.35.99 × 1000 =
  34. 34.131.3 × 10 =
  35. 35.471.6 × 10 =
  36. 36.336.6 × 1000 =
  37. 37.115.5 ÷ 100 =
  38. 38.39.05 ÷ 100 =
  39. 39.20.37 ÷ 100 =
  40. 40.349.4 ÷ 1000 =

Answer key

  1. 4570
  2. 2444
  3. 11.37
  4. 307.8
  5. 0.1229
  6. 0.4811
  7. 261
  8. 4999
  9. 20150
  10. 2716
  11. 1.945
  12. 3759
  13. 16020
  14. 4.876
  15. 41520
  16. 1232
  17. 181.5
  18. 2.147
  19. 123.6
  20. 0.03547
  21. 3.955
  22. 0.4581
  23. 92700
  24. 555
  25. 7.89
  26. 1800
  27. 113.9
  28. 26450
  29. 1831
  30. 3565
  31. 448200
  32. 242.8
  33. 35990
  34. 1313
  35. 4716
  36. 336600
  37. 1.155
  38. 0.3905
  39. 0.2037
  40. 0.3494

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