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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 522 · 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. 1.104.1 × 100 =
  2. 2.49.01 × 1000 =
  3. 3.30.81 × 10 =
  4. 4.36.25 × 10 =
  5. 5.14.03 ÷ 10 =
  6. 6.166.1 × 1000 =
  7. 7.379.8 × 1000 =
  8. 8.293.7 ÷ 1000 =
  9. 9.54.5 × 10 =
  10. 10.17.07 ÷ 100 =
  11. 11.14.01 ÷ 1000 =
  12. 12.353.8 ÷ 100 =
  13. 13.286.7 × 10 =
  14. 14.21.64 ÷ 1000 =
  15. 15.39.97 × 10 =
  16. 16.19.99 ÷ 1000 =
  17. 17.44.47 ÷ 10 =
  18. 18.18.31 ÷ 100 =
  19. 19.26.69 × 10 =
  20. 20.197.6 × 10 =
  21. 21.8.91 × 100 =
  22. 22.353.7 × 1000 =
  23. 23.47.81 × 100 =
  24. 24.31.18 × 1000 =
  25. 25.305.1 × 10 =
  26. 26.40.65 × 100 =
  27. 27.8.63 × 100 =
  28. 28.40.04 × 10 =
  29. 29.6.41 ÷ 100 =
  30. 30.264.9 × 100 =
  31. 31.12.98 ÷ 100 =
  32. 32.38.91 × 1000 =
  33. 33.293.2 ÷ 100 =
  34. 34.11.3 ÷ 100 =
  35. 35.3.28 × 1000 =
  36. 36.79.7 × 1000 =
  37. 37.205.6 ÷ 100 =
  38. 38.376.1 ÷ 1000 =
  39. 39.494.9 ÷ 10 =
  40. 40.280.2 ÷ 1000 =

Answer key

  1. 10410
  2. 49010
  3. 308.1
  4. 362.5
  5. 1.403
  6. 166100
  7. 379800
  8. 0.2937
  9. 545
  10. 0.1707
  11. 0.01401
  12. 3.538
  13. 2867
  14. 0.02164
  15. 399.7
  16. 0.01999
  17. 4.447
  18. 0.1831
  19. 266.9
  20. 1976
  21. 891
  22. 353700
  23. 4781
  24. 31180
  25. 3051
  26. 4065
  27. 863
  28. 400.4
  29. 0.0641
  30. 26490
  31. 0.1298
  32. 38910
  33. 2.932
  34. 0.113
  35. 3280
  36. 79700
  37. 2.056
  38. 0.3761
  39. 49.49
  40. 0.2802

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