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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 154 · 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. 1.26.39 ÷ 10 =
  2. 2.46.99 × 1000 =
  3. 3.48.19 ÷ 100 =
  4. 4.192.4 × 1000 =
  5. 5.77.8 ÷ 10 =
  6. 6.27.08 × 1000 =
  7. 7.461.8 ÷ 1000 =
  8. 8.227.1 ÷ 100 =
  9. 9.36.43 ÷ 1000 =
  10. 10.125.1 × 10 =
  11. 11.443.5 ÷ 10 =
  12. 12.175.3 × 10 =
  13. 13.45.01 ÷ 1000 =
  14. 14.31.89 × 100 =
  15. 15.449.8 × 10 =
  16. 16.78.1 ÷ 10 =
  17. 17.0.78 ÷ 10 =
  18. 18.230.3 × 10 =
  19. 19.401.6 × 1000 =
  20. 20.328.1 × 1000 =
  21. 21.313.9 × 1000 =
  22. 22.375.3 ÷ 100 =
  23. 23.376.4 × 1000 =
  24. 24.25.82 × 1000 =
  25. 25.44.42 ÷ 100 =
  26. 26.31.57 × 100 =
  27. 27.17.39 ÷ 100 =
  28. 28.376.1 × 1000 =
  29. 29.130.2 × 1000 =
  30. 30.101.1 × 10 =
  31. 31.22.01 × 10 =
  32. 32.38.66 × 100 =
  33. 33.94.1 ÷ 1000 =
  34. 34.46.41 × 100 =
  35. 35.38.13 ÷ 1000 =
  36. 36.204.1 × 10 =
  37. 37.268.7 ÷ 100 =
  38. 38.89.1 × 1000 =
  39. 39.47.46 ÷ 1000 =
  40. 40.406.7 ÷ 1000 =

Answer key

  1. 2.639
  2. 46990
  3. 0.4819
  4. 192400
  5. 7.78
  6. 27080
  7. 0.4618
  8. 2.271
  9. 0.03643
  10. 1251
  11. 44.35
  12. 1753
  13. 0.04501
  14. 3189
  15. 4498
  16. 7.81
  17. 0.078
  18. 2303
  19. 401600
  20. 328100
  21. 313900
  22. 3.753
  23. 376400
  24. 25820
  25. 0.4442
  26. 3157
  27. 0.1739
  28. 376100
  29. 130200
  30. 1011
  31. 220.1
  32. 3866
  33. 0.0941
  34. 4641
  35. 0.03813
  36. 2041
  37. 2.687
  38. 89100
  39. 0.04746
  40. 0.4067

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