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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 781 · 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. 1.118.7 ÷ 1000 =
  2. 2.9.3 ÷ 100 =
  3. 3.324.5 × 10 =
  4. 4.19.29 ÷ 1000 =
  5. 5.48.11 × 10 =
  6. 6.279.6 × 1000 =
  7. 7.157.6 ÷ 1000 =
  8. 8.22.26 ÷ 10 =
  9. 9.32.21 × 10 =
  10. 10.25.47 ÷ 10 =
  11. 11.11.42 × 1000 =
  12. 12.8.43 × 10 =
  13. 13.375.4 × 10 =
  14. 14.286.5 × 10 =
  15. 15.450.2 ÷ 10 =
  16. 16.201.6 × 10 =
  17. 17.37.5 × 10 =
  18. 18.31.55 × 10 =
  19. 19.12.87 ÷ 100 =
  20. 20.22.51 × 100 =
  21. 21.18.81 × 1000 =
  22. 22.380.1 ÷ 100 =
  23. 23.13.83 ÷ 10 =
  24. 24.94.3 × 100 =
  25. 25.167.3 ÷ 10 =
  26. 26.4.96 × 1000 =
  27. 27.14.36 ÷ 1000 =
  28. 28.316.9 × 1000 =
  29. 29.250.9 × 1000 =
  30. 30.425.2 ÷ 10 =
  31. 31.41.54 × 10 =
  32. 32.20.9 × 1000 =
  33. 33.43.03 ÷ 10 =
  34. 34.40.02 × 100 =
  35. 35.42.46 × 100 =
  36. 36.19.23 × 100 =
  37. 37.475.1 ÷ 100 =
  38. 38.37.35 ÷ 1000 =
  39. 39.480.2 × 1000 =
  40. 40.44.68 × 1000 =

Answer key

  1. 0.1187
  2. 0.093
  3. 3245
  4. 0.01929
  5. 481.1
  6. 279600
  7. 0.1576
  8. 2.226
  9. 322.1
  10. 2.547
  11. 11420
  12. 84.3
  13. 3754
  14. 2865
  15. 45.02
  16. 2016
  17. 375
  18. 315.5
  19. 0.1287
  20. 2251
  21. 18810
  22. 3.801
  23. 1.383
  24. 9430
  25. 16.73
  26. 4960
  27. 0.01436
  28. 316900
  29. 250900
  30. 42.52
  31. 415.4
  32. 20900
  33. 4.303
  34. 4002
  35. 4246
  36. 1923
  37. 4.751
  38. 0.03735
  39. 480200
  40. 44680

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