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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 853 · 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. 1.42.24 ÷ 10 =
  2. 2.20.49 × 10 =
  3. 3.86.9 × 10 =
  4. 4.129.7 ÷ 10 =
  5. 5.499.1 ÷ 1000 =
  6. 6.30.43 ÷ 10 =
  7. 7.390.1 × 10 =
  8. 8.297.6 × 10 =
  9. 9.302.9 ÷ 10 =
  10. 10.66.2 × 100 =
  11. 11.5.5 ÷ 10 =
  12. 12.17.36 × 100 =
  13. 13.79.4 × 100 =
  14. 14.174.4 × 1000 =
  15. 15.250.8 ÷ 100 =
  16. 16.143.2 × 1000 =
  17. 17.23.42 ÷ 1000 =
  18. 18.436.7 ÷ 1000 =
  19. 19.21.47 ÷ 1000 =
  20. 20.4.39 ÷ 1000 =
  21. 21.177.8 ÷ 100 =
  22. 22.49.18 ÷ 10 =
  23. 23.44.83 ÷ 10 =
  24. 24.43.09 × 1000 =
  25. 25.116.5 × 100 =
  26. 26.29.83 ÷ 1000 =
  27. 27.60.3 ÷ 1000 =
  28. 28.275.1 ÷ 1000 =
  29. 29.395.4 ÷ 1000 =
  30. 30.497.7 × 100 =
  31. 31.119.2 ÷ 10 =
  32. 32.12.21 ÷ 1000 =
  33. 33.277.2 × 100 =
  34. 34.1.21 ÷ 10 =
  35. 35.92.1 ÷ 10 =
  36. 36.159.2 ÷ 10 =
  37. 37.46.92 × 1000 =
  38. 38.12.03 ÷ 10 =
  39. 39.327.9 ÷ 10 =
  40. 40.480.9 ÷ 10 =

Answer key

  1. 4.224
  2. 204.9
  3. 869
  4. 12.97
  5. 0.4991
  6. 3.043
  7. 3901
  8. 2976
  9. 30.29
  10. 6620
  11. 0.55
  12. 1736
  13. 7940
  14. 174400
  15. 2.508
  16. 143200
  17. 0.02342
  18. 0.4367
  19. 0.02147
  20. 0.00439
  21. 1.778
  22. 4.918
  23. 4.483
  24. 43090
  25. 11650
  26. 0.02983
  27. 0.0603
  28. 0.2751
  29. 0.3954
  30. 49770
  31. 11.92
  32. 0.01221
  33. 27720
  34. 0.121
  35. 9.21
  36. 15.92
  37. 46920
  38. 1.203
  39. 32.79
  40. 48.09

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