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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 57 · 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. 1.127.9 ÷ 100 =
  2. 2.21.66 × 100 =
  3. 3.116.6 × 100 =
  4. 4.16.91 × 10 =
  5. 5.151.7 × 1000 =
  6. 6.26.2 × 10 =
  7. 7.35.48 × 100 =
  8. 8.455.3 × 10 =
  9. 9.60.7 ÷ 100 =
  10. 10.13.69 ÷ 100 =
  11. 11.273.8 ÷ 100 =
  12. 12.163.1 ÷ 10 =
  13. 13.49.09 × 10 =
  14. 14.15.04 × 10 =
  15. 15.25.21 × 10 =
  16. 16.80.4 ÷ 1000 =
  17. 17.37.32 × 10 =
  18. 18.19.31 × 10 =
  19. 19.5.11 ÷ 100 =
  20. 20.37.33 ÷ 1000 =
  21. 21.11.8 × 100 =
  22. 22.32.41 × 10 =
  23. 23.43.77 ÷ 1000 =
  24. 24.12.3 × 100 =
  25. 25.41.63 × 1000 =
  26. 26.46.06 × 100 =
  27. 27.22.71 ÷ 10 =
  28. 28.22.3 × 1000 =
  29. 29.315.9 ÷ 10 =
  30. 30.430.2 ÷ 100 =
  31. 31.14.59 ÷ 100 =
  32. 32.377.9 × 1000 =
  33. 33.278.8 ÷ 10 =
  34. 34.26.61 × 10 =
  35. 35.67.5 × 100 =
  36. 36.8.76 ÷ 10 =
  37. 37.21.81 ÷ 100 =
  38. 38.41.06 ÷ 10 =
  39. 39.3.53 ÷ 10 =
  40. 40.224.4 × 100 =

Answer key

  1. 1.279
  2. 2166
  3. 11660
  4. 169.1
  5. 151700
  6. 262
  7. 3548
  8. 4553
  9. 0.607
  10. 0.1369
  11. 2.738
  12. 16.31
  13. 490.9
  14. 150.4
  15. 252.1
  16. 0.0804
  17. 373.2
  18. 193.1
  19. 0.0511
  20. 0.03733
  21. 1180
  22. 324.1
  23. 0.04377
  24. 1230
  25. 41630
  26. 4606
  27. 2.271
  28. 22300
  29. 31.59
  30. 4.302
  31. 0.1459
  32. 377900
  33. 27.88
  34. 266.1
  35. 6750
  36. 0.876
  37. 0.2181
  38. 4.106
  39. 0.353
  40. 22440

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