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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 383 · 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. 1.314.1 × 1000 =
  2. 2.68.5 × 100 =
  3. 3.126.2 × 100 =
  4. 4.418.8 ÷ 10 =
  5. 5.13.41 × 1000 =
  6. 6.15.27 × 100 =
  7. 7.4.87 × 10 =
  8. 8.73.3 × 1000 =
  9. 9.131.9 × 1000 =
  10. 10.11.24 ÷ 10 =
  11. 11.6.93 ÷ 10 =
  12. 12.98.8 ÷ 10 =
  13. 13.1.68 × 10 =
  14. 14.491.1 × 100 =
  15. 15.105.9 ÷ 100 =
  16. 16.331.6 × 1000 =
  17. 17.0.62 ÷ 1000 =
  18. 18.300.1 ÷ 100 =
  19. 19.46.99 × 1000 =
  20. 20.36.46 × 10 =
  21. 21.11.9 × 1000 =
  22. 22.41.66 × 10 =
  23. 23.199.6 × 10 =
  24. 24.241.5 × 1000 =
  25. 25.479.1 × 10 =
  26. 26.212.2 × 1000 =
  27. 27.25.3 ÷ 1000 =
  28. 28.84.9 × 100 =
  29. 29.19.42 ÷ 100 =
  30. 30.144.6 × 10 =
  31. 31.384.8 ÷ 1000 =
  32. 32.167.3 ÷ 100 =
  33. 33.16.28 × 10 =
  34. 34.48.4 ÷ 100 =
  35. 35.439.7 × 100 =
  36. 36.319.1 × 100 =
  37. 37.259.2 ÷ 10 =
  38. 38.36.93 × 100 =
  39. 39.491.3 ÷ 100 =
  40. 40.26.13 × 1000 =

Answer key

  1. 314100
  2. 6850
  3. 12620
  4. 41.88
  5. 13410
  6. 1527
  7. 48.7
  8. 73300
  9. 131900
  10. 1.124
  11. 0.693
  12. 9.88
  13. 16.8
  14. 49110
  15. 1.059
  16. 331600
  17. 0.00062
  18. 3.001
  19. 46990
  20. 364.6
  21. 11900
  22. 416.6
  23. 1996
  24. 241500
  25. 4791
  26. 212200
  27. 0.0253
  28. 8490
  29. 0.1942
  30. 1446
  31. 0.3848
  32. 1.673
  33. 162.8
  34. 0.484
  35. 43970
  36. 31910
  37. 25.92
  38. 3693
  39. 4.913
  40. 26130

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