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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 612 · 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. 1.23.39 × 10 =
  2. 2.103.2 ÷ 10 =
  3. 3.32.91 × 1000 =
  4. 4.213.8 ÷ 100 =
  5. 5.7.59 × 10 =
  6. 6.16.2 ÷ 100 =
  7. 7.38.36 × 100 =
  8. 8.443.1 ÷ 100 =
  9. 9.17.2 × 10 =
  10. 10.20.81 ÷ 100 =
  11. 11.38.61 ÷ 1000 =
  12. 12.193.7 × 10 =
  13. 13.419.1 ÷ 10 =
  14. 14.36.55 ÷ 10 =
  15. 15.11.91 ÷ 10 =
  16. 16.19.07 ÷ 10 =
  17. 17.247.4 ÷ 100 =
  18. 18.67.3 ÷ 1000 =
  19. 19.388.8 × 100 =
  20. 20.14.5 × 100 =
  21. 21.31.65 ÷ 10 =
  22. 22.9.21 ÷ 100 =
  23. 23.397.1 × 1000 =
  24. 24.406.4 ÷ 100 =
  25. 25.147.4 × 100 =
  26. 26.446.6 × 1000 =
  27. 27.257.5 × 1000 =
  28. 28.119.1 ÷ 1000 =
  29. 29.46.05 × 10 =
  30. 30.142.8 × 100 =
  31. 31.340.6 ÷ 1000 =
  32. 32.6.06 × 100 =
  33. 33.40.8 × 1000 =
  34. 34.49.49 ÷ 10 =
  35. 35.269.4 ÷ 10 =
  36. 36.236.8 × 100 =
  37. 37.36.71 ÷ 1000 =
  38. 38.22.6 × 100 =
  39. 39.248.1 × 1000 =
  40. 40.35.43 × 10 =

Answer key

  1. 233.9
  2. 10.32
  3. 32910
  4. 2.138
  5. 75.9
  6. 0.162
  7. 3836
  8. 4.431
  9. 172
  10. 0.2081
  11. 0.03861
  12. 1937
  13. 41.91
  14. 3.655
  15. 1.191
  16. 1.907
  17. 2.474
  18. 0.0673
  19. 38880
  20. 1450
  21. 3.165
  22. 0.0921
  23. 397100
  24. 4.064
  25. 14740
  26. 446600
  27. 257500
  28. 0.1191
  29. 460.5
  30. 14280
  31. 0.3406
  32. 606
  33. 40800
  34. 4.949
  35. 26.94
  36. 23680
  37. 0.03671
  38. 2260
  39. 248100
  40. 354.3

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