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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 955 · 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. 1.347.9 × 1000 =
  2. 2.489.3 ÷ 10 =
  3. 3.43.26 × 1000 =
  4. 4.207.9 × 100 =
  5. 5.366.8 ÷ 100 =
  6. 6.11.22 × 1000 =
  7. 7.405.8 ÷ 10 =
  8. 8.7.5 × 10 =
  9. 9.30.51 ÷ 100 =
  10. 10.14.1 ÷ 100 =
  11. 11.274.4 ÷ 10 =
  12. 12.469.9 × 100 =
  13. 13.420.1 ÷ 100 =
  14. 14.15.25 ÷ 100 =
  15. 15.10.39 × 100 =
  16. 16.23.36 × 10 =
  17. 17.223.8 ÷ 100 =
  18. 18.90.9 × 100 =
  19. 19.18.7 × 1000 =
  20. 20.476.7 ÷ 100 =
  21. 21.144.6 × 1000 =
  22. 22.269.1 ÷ 100 =
  23. 23.382.7 ÷ 1000 =
  24. 24.273.6 ÷ 10 =
  25. 25.346.5 ÷ 100 =
  26. 26.40.73 ÷ 100 =
  27. 27.38.96 × 10 =
  28. 28.32.27 × 10 =
  29. 29.428.1 × 10 =
  30. 30.168.4 ÷ 100 =
  31. 31.495.5 × 1000 =
  32. 32.39.36 × 1000 =
  33. 33.37.95 × 100 =
  34. 34.241.1 × 10 =
  35. 35.6.79 ÷ 1000 =
  36. 36.67.3 ÷ 10 =
  37. 37.32.03 ÷ 10 =
  38. 38.35.38 ÷ 100 =
  39. 39.205.4 ÷ 1000 =
  40. 40.16.02 × 10 =

Answer key

  1. 347900
  2. 48.93
  3. 43260
  4. 20790
  5. 3.668
  6. 11220
  7. 40.58
  8. 75
  9. 0.3051
  10. 0.141
  11. 27.44
  12. 46990
  13. 4.201
  14. 0.1525
  15. 1039
  16. 233.6
  17. 2.238
  18. 9090
  19. 18700
  20. 4.767
  21. 144600
  22. 2.691
  23. 0.3827
  24. 27.36
  25. 3.465
  26. 0.4073
  27. 389.6
  28. 322.7
  29. 4281
  30. 1.684
  31. 495500
  32. 39360
  33. 3795
  34. 2411
  35. 0.00679
  36. 6.73
  37. 3.203
  38. 0.3538
  39. 0.2054
  40. 160.2

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