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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 703 · 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. 1.234.1 × 10 =
  2. 2.16.51 × 10 =
  3. 3.12.81 ÷ 100 =
  4. 4.129.3 × 100 =
  5. 5.27.19 ÷ 100 =
  6. 6.7.06 ÷ 100 =
  7. 7.30.74 ÷ 1000 =
  8. 8.39.07 ÷ 100 =
  9. 9.31.72 ÷ 100 =
  10. 10.46.79 × 10 =
  11. 11.311.1 × 1000 =
  12. 12.385.9 ÷ 1000 =
  13. 13.36.87 ÷ 100 =
  14. 14.203.6 ÷ 1000 =
  15. 15.103.2 ÷ 1000 =
  16. 16.47.08 ÷ 1000 =
  17. 17.245.1 × 1000 =
  18. 18.24.06 × 1000 =
  19. 19.218.7 ÷ 1000 =
  20. 20.29.1 × 10 =
  21. 21.45.49 × 10 =
  22. 22.161.6 × 100 =
  23. 23.10.04 × 10 =
  24. 24.18.77 × 10 =
  25. 25.15.84 ÷ 10 =
  26. 26.32.81 × 1000 =
  27. 27.43.57 × 100 =
  28. 28.269.2 × 100 =
  29. 29.10.73 ÷ 1000 =
  30. 30.324.1 × 10 =
  31. 31.476.4 ÷ 100 =
  32. 32.403.3 × 1000 =
  33. 33.26.76 × 10 =
  34. 34.10.22 ÷ 10 =
  35. 35.36.93 × 10 =
  36. 36.140.6 × 10 =
  37. 37.407.1 ÷ 1000 =
  38. 38.499.9 × 10 =
  39. 39.309.2 ÷ 100 =
  40. 40.26.25 × 1000 =

Answer key

  1. 2341
  2. 165.1
  3. 0.1281
  4. 12930
  5. 0.2719
  6. 0.0706
  7. 0.03074
  8. 0.3907
  9. 0.3172
  10. 467.9
  11. 311100
  12. 0.3859
  13. 0.3687
  14. 0.2036
  15. 0.1032
  16. 0.04708
  17. 245100
  18. 24060
  19. 0.2187
  20. 291
  21. 454.9
  22. 16160
  23. 100.4
  24. 187.7
  25. 1.584
  26. 32810
  27. 4357
  28. 26920
  29. 0.01073
  30. 3241
  31. 4.764
  32. 403300
  33. 267.6
  34. 1.022
  35. 369.3
  36. 1406
  37. 0.4071
  38. 4999
  39. 3.092
  40. 26250

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