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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 369 · 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. 1.338.4 × 10 =
  2. 2.44.56 ÷ 100 =
  3. 3.7.85 ÷ 10 =
  4. 4.17.06 ÷ 10 =
  5. 5.45.93 × 1000 =
  6. 6.38.86 ÷ 1000 =
  7. 7.45.42 ÷ 100 =
  8. 8.5.27 × 100 =
  9. 9.53.1 × 10 =
  10. 10.8.78 × 10 =
  11. 11.25.01 × 10 =
  12. 12.134.6 ÷ 1000 =
  13. 13.193.9 ÷ 1000 =
  14. 14.2.58 × 100 =
  15. 15.232.2 × 100 =
  16. 16.225.9 × 10 =
  17. 17.153.6 × 10 =
  18. 18.8.8 ÷ 100 =
  19. 19.225.8 ÷ 10 =
  20. 20.6.01 × 1000 =
  21. 21.31.17 × 1000 =
  22. 22.41.77 × 10 =
  23. 23.37.53 ÷ 1000 =
  24. 24.243.3 × 100 =
  25. 25.112.3 ÷ 10 =
  26. 26.28.71 × 100 =
  27. 27.240.7 × 10 =
  28. 28.474.3 × 1000 =
  29. 29.472.4 ÷ 1000 =
  30. 30.35.01 ÷ 100 =
  31. 31.392.5 × 100 =
  32. 32.128.2 × 100 =
  33. 33.48.64 × 10 =
  34. 34.37.71 × 100 =
  35. 35.19.78 ÷ 100 =
  36. 36.21.41 ÷ 1000 =
  37. 37.32.19 ÷ 10 =
  38. 38.30.4 ÷ 1000 =
  39. 39.22.29 × 100 =
  40. 40.157.3 ÷ 100 =

Answer key

  1. 3384
  2. 0.4456
  3. 0.785
  4. 1.706
  5. 45930
  6. 0.03886
  7. 0.4542
  8. 527
  9. 531
  10. 87.8
  11. 250.1
  12. 0.1346
  13. 0.1939
  14. 258
  15. 23220
  16. 2259
  17. 1536
  18. 0.088
  19. 22.58
  20. 6010
  21. 31170
  22. 417.7
  23. 0.03753
  24. 24330
  25. 11.23
  26. 2871
  27. 2407
  28. 474300
  29. 0.4724
  30. 0.3501
  31. 39250
  32. 12820
  33. 486.4
  34. 3771
  35. 0.1978
  36. 0.02141
  37. 3.219
  38. 0.0304
  39. 2229
  40. 1.573

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