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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 223 · 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. 1.405.6 ÷ 1000 =
  2. 2.429.2 ÷ 1000 =
  3. 3.3.92 × 10 =
  4. 4.190.2 × 100 =
  5. 5.401.8 ÷ 100 =
  6. 6.130.3 ÷ 10 =
  7. 7.9.29 × 10 =
  8. 8.6.2 ÷ 10 =
  9. 9.482.8 ÷ 100 =
  10. 10.363.6 ÷ 10 =
  11. 11.145.5 × 10 =
  12. 12.17.25 ÷ 100 =
  13. 13.30.14 ÷ 10 =
  14. 14.458.1 ÷ 10 =
  15. 15.27.19 × 10 =
  16. 16.424.8 ÷ 1000 =
  17. 17.20.59 × 10 =
  18. 18.430.3 ÷ 10 =
  19. 19.7.36 ÷ 100 =
  20. 20.21.81 × 100 =
  21. 21.397.8 ÷ 1000 =
  22. 22.149.3 ÷ 100 =
  23. 23.8.07 × 10 =
  24. 24.0.31 × 10 =
  25. 25.3.2 × 1000 =
  26. 26.366.3 × 100 =
  27. 27.42.97 × 10 =
  28. 28.10.99 × 10 =
  29. 29.0.18 × 1000 =
  30. 30.440.8 ÷ 10 =
  31. 31.108.1 × 10 =
  32. 32.462.6 ÷ 100 =
  33. 33.22.81 × 10 =
  34. 34.25.56 ÷ 10 =
  35. 35.7.78 ÷ 1000 =
  36. 36.41.26 ÷ 100 =
  37. 37.35.23 ÷ 1000 =
  38. 38.37.28 × 10 =
  39. 39.476.1 × 100 =
  40. 40.88.1 ÷ 1000 =

Answer key

  1. 0.4056
  2. 0.4292
  3. 39.2
  4. 19020
  5. 4.018
  6. 13.03
  7. 92.9
  8. 0.62
  9. 4.828
  10. 36.36
  11. 1455
  12. 0.1725
  13. 3.014
  14. 45.81
  15. 271.9
  16. 0.4248
  17. 205.9
  18. 43.03
  19. 0.0736
  20. 2181
  21. 0.3978
  22. 1.493
  23. 80.7
  24. 3.1
  25. 3200
  26. 36630
  27. 429.7
  28. 109.9
  29. 180
  30. 44.08
  31. 1081
  32. 4.626
  33. 228.1
  34. 2.556
  35. 0.00778
  36. 0.4126
  37. 0.03523
  38. 372.8
  39. 47610
  40. 0.0881

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