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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 998 · 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. 1.12.97 × 1000 =
  2. 2.49.1 × 100 =
  3. 3.96.9 ÷ 10 =
  4. 4.30.01 ÷ 1000 =
  5. 5.23.41 × 1000 =
  6. 6.186.9 × 10 =
  7. 7.176.1 × 1000 =
  8. 8.157.1 × 100 =
  9. 9.62.9 ÷ 1000 =
  10. 10.339.9 ÷ 10 =
  11. 11.388.1 × 100 =
  12. 12.37.77 × 10 =
  13. 13.35.15 × 10 =
  14. 14.44.04 × 100 =
  15. 15.33.3 ÷ 100 =
  16. 16.473.9 × 10 =
  17. 17.272.6 ÷ 1000 =
  18. 18.18.66 × 1000 =
  19. 19.32.61 ÷ 10 =
  20. 20.479.4 ÷ 10 =
  21. 21.400.1 ÷ 10 =
  22. 22.462.5 ÷ 100 =
  23. 23.167.1 × 10 =
  24. 24.15.37 × 100 =
  25. 25.6.15 × 100 =
  26. 26.27.61 × 1000 =
  27. 27.47.21 ÷ 10 =
  28. 28.93.8 × 10 =
  29. 29.5.16 ÷ 10 =
  30. 30.488.8 × 10 =
  31. 31.2.07 ÷ 100 =
  32. 32.378.3 ÷ 100 =
  33. 33.456.8 ÷ 10 =
  34. 34.343.1 ÷ 10 =
  35. 35.3.28 × 10 =
  36. 36.6.92 × 1000 =
  37. 37.320.9 ÷ 100 =
  38. 38.296.7 × 1000 =
  39. 39.324.4 ÷ 100 =
  40. 40.42.8 ÷ 100 =

Answer key

  1. 12970
  2. 4910
  3. 9.69
  4. 0.03001
  5. 23410
  6. 1869
  7. 176100
  8. 15710
  9. 0.0629
  10. 33.99
  11. 38810
  12. 377.7
  13. 351.5
  14. 4404
  15. 0.333
  16. 4739
  17. 0.2726
  18. 18660
  19. 3.261
  20. 47.94
  21. 40.01
  22. 4.625
  23. 1671
  24. 1537
  25. 615
  26. 27610
  27. 4.721
  28. 938
  29. 0.516
  30. 4888
  31. 0.0207
  32. 3.783
  33. 45.68
  34. 34.31
  35. 32.8
  36. 6920
  37. 3.209
  38. 296700
  39. 3.244
  40. 0.428

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