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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 156 · 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. 1.49.11 × 1000 =
  2. 2.37.82 ÷ 10 =
  3. 3.415.1 × 100 =
  4. 4.25.4 × 10 =
  5. 5.9.56 × 1000 =
  6. 6.279.1 × 100 =
  7. 7.2.3 × 10 =
  8. 8.270.2 ÷ 1000 =
  9. 9.425.5 ÷ 10 =
  10. 10.173.3 × 10 =
  11. 11.39.89 × 10 =
  12. 12.407.1 ÷ 10 =
  13. 13.14.81 × 100 =
  14. 14.41.62 × 1000 =
  15. 15.15.1 ÷ 1000 =
  16. 16.276.5 × 1000 =
  17. 17.490.1 ÷ 1000 =
  18. 18.193.2 × 100 =
  19. 19.10.47 × 10 =
  20. 20.38.71 ÷ 10 =
  21. 21.12.23 × 10 =
  22. 22.104.2 × 10 =
  23. 23.160.6 ÷ 1000 =
  24. 24.36.61 × 10 =
  25. 25.43.4 ÷ 100 =
  26. 26.21.81 × 10 =
  27. 27.432.2 × 10 =
  28. 28.7.45 ÷ 100 =
  29. 29.366.6 ÷ 100 =
  30. 30.248.2 ÷ 1000 =
  31. 31.366.1 × 10 =
  32. 32.45.13 × 1000 =
  33. 33.72.9 ÷ 100 =
  34. 34.295.1 ÷ 10 =
  35. 35.205.4 ÷ 100 =
  36. 36.48.54 × 100 =
  37. 37.244.5 × 100 =
  38. 38.9.08 × 1000 =
  39. 39.83.5 × 1000 =
  40. 40.11.43 × 10 =

Answer key

  1. 49110
  2. 3.782
  3. 41510
  4. 254
  5. 9560
  6. 27910
  7. 23
  8. 0.2702
  9. 42.55
  10. 1733
  11. 398.9
  12. 40.71
  13. 1481
  14. 41620
  15. 0.0151
  16. 276500
  17. 0.4901
  18. 19320
  19. 104.7
  20. 3.871
  21. 122.3
  22. 1042
  23. 0.1606
  24. 366.1
  25. 0.434
  26. 218.1
  27. 4322
  28. 0.0745
  29. 3.666
  30. 0.2482
  31. 3661
  32. 45130
  33. 0.729
  34. 29.51
  35. 2.054
  36. 4854
  37. 24450
  38. 9080
  39. 83500
  40. 114.3

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