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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 586 · 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. 1.456.2 × 1000 =
  2. 2.27.08 ÷ 100 =
  3. 3.41.28 ÷ 10 =
  4. 4.398.2 × 1000 =
  5. 5.33.31 ÷ 100 =
  6. 6.367.1 × 10 =
  7. 7.284.9 × 100 =
  8. 8.484.9 × 10 =
  9. 9.270.5 × 100 =
  10. 10.75.6 × 100 =
  11. 11.3.01 × 1000 =
  12. 12.28.5 ÷ 1000 =
  13. 13.5.97 × 1000 =
  14. 14.183.1 × 10 =
  15. 15.81.1 ÷ 100 =
  16. 16.28.92 ÷ 100 =
  17. 17.175.1 × 10 =
  18. 18.11.4 ÷ 1000 =
  19. 19.106.1 × 100 =
  20. 20.27.74 ÷ 1000 =
  21. 21.45.39 × 100 =
  22. 22.245.5 ÷ 100 =
  23. 23.2.83 × 10 =
  24. 24.27.87 × 10 =
  25. 25.362.1 ÷ 100 =
  26. 26.3.16 ÷ 10 =
  27. 27.476.7 ÷ 10 =
  28. 28.28.31 × 1000 =
  29. 29.426.1 ÷ 10 =
  30. 30.33.54 ÷ 10 =
  31. 31.396.8 × 10 =
  32. 32.30.85 × 100 =
  33. 33.393.7 × 10 =
  34. 34.35.65 × 1000 =
  35. 35.24.23 × 1000 =
  36. 36.395.1 × 10 =
  37. 37.38.13 × 10 =
  38. 38.366.3 × 1000 =
  39. 39.215.2 ÷ 100 =
  40. 40.43.9 × 1000 =

Answer key

  1. 456200
  2. 0.2708
  3. 4.128
  4. 398200
  5. 0.3331
  6. 3671
  7. 28490
  8. 4849
  9. 27050
  10. 7560
  11. 3010
  12. 0.0285
  13. 5970
  14. 1831
  15. 0.811
  16. 0.2892
  17. 1751
  18. 0.0114
  19. 10610
  20. 0.02774
  21. 4539
  22. 2.455
  23. 28.3
  24. 278.7
  25. 3.621
  26. 0.316
  27. 47.67
  28. 28310
  29. 42.61
  30. 3.354
  31. 3968
  32. 3085
  33. 3937
  34. 35650
  35. 24230
  36. 3951
  37. 381.3
  38. 366300
  39. 2.152
  40. 43900

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