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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 705 · 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. 1.28.36 × 1000 =
  2. 2.371.3 × 100 =
  3. 3.462.1 × 10 =
  4. 4.48.42 ÷ 100 =
  5. 5.18.91 × 10 =
  6. 6.4.55 ÷ 1000 =
  7. 7.33.91 × 10 =
  8. 8.129.4 × 100 =
  9. 9.37.27 × 100 =
  10. 10.77.7 ÷ 1000 =
  11. 11.3.42 × 100 =
  12. 12.18.2 ÷ 100 =
  13. 13.286.9 × 100 =
  14. 14.24.51 × 100 =
  15. 15.40.01 × 10 =
  16. 16.30.28 ÷ 1000 =
  17. 17.42.82 × 1000 =
  18. 18.44.38 ÷ 10 =
  19. 19.166.1 × 1000 =
  20. 20.435.5 × 100 =
  21. 21.4.17 × 10 =
  22. 22.86.6 × 10 =
  23. 23.36.58 × 1000 =
  24. 24.43.88 × 1000 =
  25. 25.110.9 × 10 =
  26. 26.16.12 × 100 =
  27. 27.32.41 ÷ 100 =
  28. 28.192.5 × 10 =
  29. 29.181.1 ÷ 10 =
  30. 30.113.1 ÷ 100 =
  31. 31.19.08 ÷ 10 =
  32. 32.8.12 × 100 =
  33. 33.431.2 × 10 =
  34. 34.190.3 × 1000 =
  35. 35.298.9 × 10 =
  36. 36.25.44 × 10 =
  37. 37.301.9 × 100 =
  38. 38.402.7 ÷ 10 =
  39. 39.25.58 ÷ 100 =
  40. 40.27.1 ÷ 10 =

Answer key

  1. 28360
  2. 37130
  3. 4621
  4. 0.4842
  5. 189.1
  6. 0.00455
  7. 339.1
  8. 12940
  9. 3727
  10. 0.0777
  11. 342
  12. 0.182
  13. 28690
  14. 2451
  15. 400.1
  16. 0.03028
  17. 42820
  18. 4.438
  19. 166100
  20. 43550
  21. 41.7
  22. 866
  23. 36580
  24. 43880
  25. 1109
  26. 1612
  27. 0.3241
  28. 1925
  29. 18.11
  30. 1.131
  31. 1.908
  32. 812
  33. 4312
  34. 190300
  35. 2989
  36. 254.4
  37. 30190
  38. 40.27
  39. 0.2558
  40. 2.71

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