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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 928 · 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. 1.21.72 × 100 =
  2. 2.462.7 × 10 =
  3. 3.45.94 ÷ 1000 =
  4. 4.282.8 × 10 =
  5. 5.54.6 × 1000 =
  6. 6.114.8 × 10 =
  7. 7.14.74 ÷ 100 =
  8. 8.402.5 ÷ 1000 =
  9. 9.7.01 × 10 =
  10. 10.263.6 × 100 =
  11. 11.87.2 × 1000 =
  12. 12.36.61 ÷ 1000 =
  13. 13.15.85 ÷ 10 =
  14. 14.20.31 × 1000 =
  15. 15.127.6 × 100 =
  16. 16.84.3 × 1000 =
  17. 17.45.29 × 10 =
  18. 18.20.31 ÷ 1000 =
  19. 19.339.5 ÷ 10 =
  20. 20.19.56 ÷ 10 =
  21. 21.369.5 × 10 =
  22. 22.48.07 ÷ 10 =
  23. 23.10.82 × 10 =
  24. 24.208.5 × 10 =
  25. 25.296.3 ÷ 10 =
  26. 26.364.7 × 1000 =
  27. 27.16.67 ÷ 1000 =
  28. 28.362.4 ÷ 100 =
  29. 29.192.7 ÷ 10 =
  30. 30.1.55 ÷ 10 =
  31. 31.474.1 × 10 =
  32. 32.36.19 × 1000 =
  33. 33.28.07 ÷ 100 =
  34. 34.216.9 ÷ 1000 =
  35. 35.0.82 ÷ 1000 =
  36. 36.17.68 ÷ 10 =
  37. 37.5.79 ÷ 10 =
  38. 38.31.51 ÷ 100 =
  39. 39.470.5 × 10 =
  40. 40.99.7 × 1000 =

Answer key

  1. 2172
  2. 4627
  3. 0.04594
  4. 2828
  5. 54600
  6. 1148
  7. 0.1474
  8. 0.4025
  9. 70.1
  10. 26360
  11. 87200
  12. 0.03661
  13. 1.585
  14. 20310
  15. 12760
  16. 84300
  17. 452.9
  18. 0.02031
  19. 33.95
  20. 1.956
  21. 3695
  22. 4.807
  23. 108.2
  24. 2085
  25. 29.63
  26. 364700
  27. 0.01667
  28. 3.624
  29. 19.27
  30. 0.155
  31. 4741
  32. 36190
  33. 0.2807
  34. 0.2169
  35. 0.00082
  36. 1.768
  37. 0.579
  38. 0.3151
  39. 4705
  40. 99700

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