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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 578 · 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. 1.234.7 × 100 =
  2. 2.46.26 ÷ 10 =
  3. 3.7.7 × 100 =
  4. 4.47.91 ÷ 10 =
  5. 5.17.46 × 10 =
  6. 6.160.5 × 10 =
  7. 7.99.8 ÷ 100 =
  8. 8.12.71 × 100 =
  9. 9.157.1 ÷ 1000 =
  10. 10.353.1 ÷ 10 =
  11. 11.484.3 × 100 =
  12. 12.42.06 × 1000 =
  13. 13.27.49 × 1000 =
  14. 14.31.89 ÷ 10 =
  15. 15.15.45 × 10 =
  16. 16.37.87 × 1000 =
  17. 17.45.64 × 100 =
  18. 18.48.78 ÷ 100 =
  19. 19.493.4 ÷ 100 =
  20. 20.65.1 × 1000 =
  21. 21.24.68 × 10 =
  22. 22.46.77 × 100 =
  23. 23.253.1 × 100 =
  24. 24.61.5 × 10 =
  25. 25.3.11 ÷ 100 =
  26. 26.15.11 ÷ 10 =
  27. 27.34.1 ÷ 1000 =
  28. 28.225.6 ÷ 1000 =
  29. 29.412.2 ÷ 10 =
  30. 30.98.2 ÷ 1000 =
  31. 31.44.69 ÷ 100 =
  32. 32.43.75 × 1000 =
  33. 33.424.7 × 10 =
  34. 34.37.44 × 100 =
  35. 35.263.3 ÷ 10 =
  36. 36.286.3 × 10 =
  37. 37.18.51 × 1000 =
  38. 38.36.19 ÷ 1000 =
  39. 39.231.2 ÷ 100 =
  40. 40.437.1 ÷ 1000 =

Answer key

  1. 23470
  2. 4.626
  3. 770
  4. 4.791
  5. 174.6
  6. 1605
  7. 0.998
  8. 1271
  9. 0.1571
  10. 35.31
  11. 48430
  12. 42060
  13. 27490
  14. 3.189
  15. 154.5
  16. 37870
  17. 4564
  18. 0.4878
  19. 4.934
  20. 65100
  21. 246.8
  22. 4677
  23. 25310
  24. 615
  25. 0.0311
  26. 1.511
  27. 0.0341
  28. 0.2256
  29. 41.22
  30. 0.0982
  31. 0.4469
  32. 43750
  33. 4247
  34. 3744
  35. 26.33
  36. 2863
  37. 18510
  38. 0.03619
  39. 2.312
  40. 0.4371

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