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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 445 · 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. 1.12.93 × 1000 =
  2. 2.10.61 ÷ 10 =
  3. 3.8.52 ÷ 100 =
  4. 4.42.77 × 1000 =
  5. 5.351.1 ÷ 100 =
  6. 6.108.5 × 1000 =
  7. 7.47.24 × 10 =
  8. 8.49.73 × 100 =
  9. 9.12.19 × 100 =
  10. 10.388.6 × 10 =
  11. 11.34.04 ÷ 1000 =
  12. 12.312.3 × 10 =
  13. 13.471.3 × 1000 =
  14. 14.28.22 × 100 =
  15. 15.449.4 ÷ 10 =
  16. 16.61.6 × 10 =
  17. 17.7.77 × 1000 =
  18. 18.28.1 × 10 =
  19. 19.63.9 ÷ 10 =
  20. 20.24.7 ÷ 100 =
  21. 21.22.41 × 10 =
  22. 22.38.78 × 100 =
  23. 23.39.91 × 1000 =
  24. 24.45.43 × 10 =
  25. 25.41.91 × 100 =
  26. 26.39.1 × 10 =
  27. 27.70.6 × 100 =
  28. 28.249.8 ÷ 1000 =
  29. 29.23.54 × 10 =
  30. 30.13.72 × 1000 =
  31. 31.465.8 × 10 =
  32. 32.98.7 ÷ 1000 =
  33. 33.6.1 ÷ 1000 =
  34. 34.67.8 ÷ 10 =
  35. 35.39.51 ÷ 10 =
  36. 36.13.68 × 100 =
  37. 37.41.12 ÷ 10 =
  38. 38.382.2 × 1000 =
  39. 39.0.52 × 10 =
  40. 40.366.5 ÷ 1000 =

Answer key

  1. 12930
  2. 1.061
  3. 0.0852
  4. 42770
  5. 3.511
  6. 108500
  7. 472.4
  8. 4973
  9. 1219
  10. 3886
  11. 0.03404
  12. 3123
  13. 471300
  14. 2822
  15. 44.94
  16. 616
  17. 7770
  18. 281
  19. 6.39
  20. 0.247
  21. 224.1
  22. 3878
  23. 39910
  24. 454.3
  25. 4191
  26. 391
  27. 7060
  28. 0.2498
  29. 235.4
  30. 13720
  31. 4658
  32. 0.0987
  33. 0.0061
  34. 6.78
  35. 3.951
  36. 1368
  37. 4.112
  38. 382200
  39. 5.2
  40. 0.3665

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