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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 779 · 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. 1.259.3 ÷ 100 =
  2. 2.153.3 × 10 =
  3. 3.48.37 ÷ 10 =
  4. 4.4.61 × 1000 =
  5. 5.495.1 ÷ 10 =
  6. 6.40.38 ÷ 1000 =
  7. 7.23.18 ÷ 10 =
  8. 8.82.8 × 1000 =
  9. 9.308.1 ÷ 10 =
  10. 10.33.42 ÷ 100 =
  11. 11.16.64 × 1000 =
  12. 12.335.1 × 1000 =
  13. 13.24.01 ÷ 10 =
  14. 14.27.27 × 100 =
  15. 15.369.3 × 100 =
  16. 16.1.68 ÷ 10 =
  17. 17.57.7 × 100 =
  18. 18.235.7 × 1000 =
  19. 19.17.96 × 10 =
  20. 20.3.89 × 1000 =
  21. 21.43.99 ÷ 1000 =
  22. 22.165.6 ÷ 100 =
  23. 23.10.54 × 1000 =
  24. 24.236.9 ÷ 100 =
  25. 25.7.55 × 100 =
  26. 26.39.56 ÷ 1000 =
  27. 27.474.5 ÷ 10 =
  28. 28.31.74 × 1000 =
  29. 29.481.4 × 1000 =
  30. 30.7.26 ÷ 1000 =
  31. 31.394.2 ÷ 10 =
  32. 32.396.9 × 10 =
  33. 33.492.4 × 10 =
  34. 34.89.8 × 1000 =
  35. 35.254.1 ÷ 10 =
  36. 36.35.72 ÷ 1000 =
  37. 37.19.08 × 1000 =
  38. 38.109.3 ÷ 1000 =
  39. 39.476.9 × 10 =
  40. 40.47.73 ÷ 100 =

Answer key

  1. 2.593
  2. 1533
  3. 4.837
  4. 4610
  5. 49.51
  6. 0.04038
  7. 2.318
  8. 82800
  9. 30.81
  10. 0.3342
  11. 16640
  12. 335100
  13. 2.401
  14. 2727
  15. 36930
  16. 0.168
  17. 5770
  18. 235700
  19. 179.6
  20. 3890
  21. 0.04399
  22. 1.656
  23. 10540
  24. 2.369
  25. 755
  26. 0.03956
  27. 47.45
  28. 31740
  29. 481400
  30. 0.00726
  31. 39.42
  32. 3969
  33. 4924
  34. 89800
  35. 25.41
  36. 0.03572
  37. 19080
  38. 0.1093
  39. 4769
  40. 0.4773

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