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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 846 · 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. 1.9.7 ÷ 100 =
  2. 2.302.6 ÷ 100 =
  3. 3.13.13 ÷ 10 =
  4. 4.24.92 × 1000 =
  5. 5.31.04 ÷ 1000 =
  6. 6.8.03 ÷ 1000 =
  7. 7.42.29 × 10 =
  8. 8.13.63 × 1000 =
  9. 9.46.62 × 100 =
  10. 10.34.74 ÷ 1000 =
  11. 11.5.27 × 10 =
  12. 12.92.6 × 10 =
  13. 13.22.12 × 100 =
  14. 14.193.7 × 10 =
  15. 15.7.64 × 100 =
  16. 16.441.2 ÷ 10 =
  17. 17.44.4 × 100 =
  18. 18.240.1 ÷ 100 =
  19. 19.409.5 ÷ 1000 =
  20. 20.93.2 × 1000 =
  21. 21.44.66 ÷ 1000 =
  22. 22.357.4 × 100 =
  23. 23.475.1 × 10 =
  24. 24.73.5 ÷ 10 =
  25. 25.36.1 × 1000 =
  26. 26.5.69 ÷ 1000 =
  27. 27.28.5 ÷ 10 =
  28. 28.200.4 × 10 =
  29. 29.347.4 ÷ 1000 =
  30. 30.11.59 × 100 =
  31. 31.481.5 × 1000 =
  32. 32.153.6 × 1000 =
  33. 33.44.89 × 10 =
  34. 34.33.16 ÷ 10 =
  35. 35.107.9 ÷ 1000 =
  36. 36.17.73 × 1000 =
  37. 37.22.04 × 100 =
  38. 38.26.3 ÷ 1000 =
  39. 39.470.1 × 100 =
  40. 40.26.9 ÷ 1000 =

Answer key

  1. 0.097
  2. 3.026
  3. 1.313
  4. 24920
  5. 0.03104
  6. 0.00803
  7. 422.9
  8. 13630
  9. 4662
  10. 0.03474
  11. 52.7
  12. 926
  13. 2212
  14. 1937
  15. 764
  16. 44.12
  17. 4440
  18. 2.401
  19. 0.4095
  20. 93200
  21. 0.04466
  22. 35740
  23. 4751
  24. 7.35
  25. 36100
  26. 0.00569
  27. 2.85
  28. 2004
  29. 0.3474
  30. 1159
  31. 481500
  32. 153600
  33. 448.9
  34. 3.316
  35. 0.1079
  36. 17730
  37. 2204
  38. 0.0263
  39. 47010
  40. 0.0269

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