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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 827 · 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. 1.306.2 × 100 =
  2. 2.329.8 ÷ 1000 =
  3. 3.13.34 ÷ 100 =
  4. 4.447.2 ÷ 100 =
  5. 5.233.6 ÷ 1000 =
  6. 6.5.52 ÷ 10 =
  7. 7.259.9 × 1000 =
  8. 8.487.9 × 1000 =
  9. 9.21.83 ÷ 1000 =
  10. 10.41.91 × 1000 =
  11. 11.3.01 ÷ 10 =
  12. 12.40.26 × 100 =
  13. 13.204.4 × 1000 =
  14. 14.21.83 × 10 =
  15. 15.40.94 ÷ 100 =
  16. 16.118.7 ÷ 1000 =
  17. 17.26.63 × 10 =
  18. 18.236.4 × 1000 =
  19. 19.39.82 ÷ 1000 =
  20. 20.29.42 × 100 =
  21. 21.406.5 × 100 =
  22. 22.64.8 ÷ 1000 =
  23. 23.12.35 × 100 =
  24. 24.156.8 ÷ 10 =
  25. 25.46.91 ÷ 100 =
  26. 26.382.3 × 10 =
  27. 27.1.87 × 1000 =
  28. 28.397.8 ÷ 10 =
  29. 29.2.26 × 10 =
  30. 30.242.3 ÷ 100 =
  31. 31.340.1 ÷ 100 =
  32. 32.23.03 ÷ 100 =
  33. 33.9.37 × 10 =
  34. 34.24.62 ÷ 1000 =
  35. 35.40.23 × 10 =
  36. 36.23.39 ÷ 100 =
  37. 37.454.8 × 10 =
  38. 38.14.73 × 10 =
  39. 39.294.9 ÷ 1000 =
  40. 40.15.1 × 100 =

Answer key

  1. 30620
  2. 0.3298
  3. 0.1334
  4. 4.472
  5. 0.2336
  6. 0.552
  7. 259900
  8. 487900
  9. 0.02183
  10. 41910
  11. 0.301
  12. 4026
  13. 204400
  14. 218.3
  15. 0.4094
  16. 0.1187
  17. 266.3
  18. 236400
  19. 0.03982
  20. 2942
  21. 40650
  22. 0.0648
  23. 1235
  24. 15.68
  25. 0.4691
  26. 3823
  27. 1870
  28. 39.78
  29. 22.6
  30. 2.423
  31. 3.401
  32. 0.2303
  33. 93.7
  34. 0.02462
  35. 402.3
  36. 0.2339
  37. 4548
  38. 147.3
  39. 0.2949
  40. 1510

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