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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 538 · 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. 1.46.07 × 100 =
  2. 2.225.2 × 10 =
  3. 3.249.2 ÷ 100 =
  4. 4.4.06 × 10 =
  5. 5.143.2 ÷ 100 =
  6. 6.38.69 × 1000 =
  7. 7.11.01 ÷ 10 =
  8. 8.295.1 ÷ 100 =
  9. 9.27.8 × 100 =
  10. 10.41.79 ÷ 1000 =
  11. 11.339.4 ÷ 10 =
  12. 12.299.2 × 10 =
  13. 13.40.38 ÷ 100 =
  14. 14.296.2 × 10 =
  15. 15.205.3 ÷ 100 =
  16. 16.119.7 ÷ 1000 =
  17. 17.422.1 × 1000 =
  18. 18.192.4 ÷ 10 =
  19. 19.36.19 ÷ 1000 =
  20. 20.18.07 × 100 =
  21. 21.423.1 × 100 =
  22. 22.2.28 ÷ 10 =
  23. 23.22.03 × 100 =
  24. 24.479.1 ÷ 1000 =
  25. 25.29.14 ÷ 1000 =
  26. 26.369.2 ÷ 100 =
  27. 27.72.1 × 10 =
  28. 28.1.28 ÷ 10 =
  29. 29.319.7 × 10 =
  30. 30.148.1 × 10 =
  31. 31.62.7 × 10 =
  32. 32.219.9 ÷ 10 =
  33. 33.9.41 × 1000 =
  34. 34.228.4 ÷ 1000 =
  35. 35.441.1 × 1000 =
  36. 36.157.6 × 100 =
  37. 37.1.71 ÷ 10 =
  38. 38.43.41 × 10 =
  39. 39.29.76 × 10 =
  40. 40.355.6 ÷ 100 =

Answer key

  1. 4607
  2. 2252
  3. 2.492
  4. 40.6
  5. 1.432
  6. 38690
  7. 1.101
  8. 2.951
  9. 2780
  10. 0.04179
  11. 33.94
  12. 2992
  13. 0.4038
  14. 2962
  15. 2.053
  16. 0.1197
  17. 422100
  18. 19.24
  19. 0.03619
  20. 1807
  21. 42310
  22. 0.228
  23. 2203
  24. 0.4791
  25. 0.02914
  26. 3.692
  27. 721
  28. 0.128
  29. 3197
  30. 1481
  31. 627
  32. 21.99
  33. 9410
  34. 0.2284
  35. 441100
  36. 15760
  37. 0.171
  38. 434.1
  39. 297.6
  40. 3.556

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