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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 243 · 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. 1.21.25 ÷ 1000 =
  2. 2.38.99 ÷ 100 =
  3. 3.301.9 ÷ 10 =
  4. 4.17.8 × 1000 =
  5. 5.172.5 ÷ 100 =
  6. 6.19.35 ÷ 1000 =
  7. 7.32.91 ÷ 1000 =
  8. 8.12.69 ÷ 100 =
  9. 9.323.9 × 100 =
  10. 10.310.6 × 10 =
  11. 11.113.7 × 100 =
  12. 12.147.4 × 1000 =
  13. 13.17.4 ÷ 100 =
  14. 14.21.06 × 100 =
  15. 15.25.22 × 10 =
  16. 16.191.1 ÷ 10 =
  17. 17.44.41 ÷ 10 =
  18. 18.23.19 ÷ 1000 =
  19. 19.23.56 ÷ 10 =
  20. 20.222.1 × 1000 =
  21. 21.6.49 × 1000 =
  22. 22.99.1 × 100 =
  23. 23.15.77 ÷ 10 =
  24. 24.30.49 ÷ 10 =
  25. 25.30.61 ÷ 1000 =
  26. 26.212.2 ÷ 100 =
  27. 27.399.6 × 10 =
  28. 28.298.1 × 10 =
  29. 29.1.99 ÷ 1000 =
  30. 30.10.52 ÷ 1000 =
  31. 31.10.96 × 100 =
  32. 32.12.81 × 100 =
  33. 33.185.7 × 100 =
  34. 34.212.1 ÷ 10 =
  35. 35.445.3 ÷ 1000 =
  36. 36.0.71 × 1000 =
  37. 37.80.3 × 1000 =
  38. 38.41.61 ÷ 10 =
  39. 39.23.84 × 100 =
  40. 40.439.6 × 10 =

Answer key

  1. 0.02125
  2. 0.3899
  3. 30.19
  4. 17800
  5. 1.725
  6. 0.01935
  7. 0.03291
  8. 0.1269
  9. 32390
  10. 3106
  11. 11370
  12. 147400
  13. 0.174
  14. 2106
  15. 252.2
  16. 19.11
  17. 4.441
  18. 0.02319
  19. 2.356
  20. 222100
  21. 6490
  22. 9910
  23. 1.577
  24. 3.049
  25. 0.03061
  26. 2.122
  27. 3996
  28. 2981
  29. 0.00199
  30. 0.01052
  31. 1096
  32. 1281
  33. 18570
  34. 21.21
  35. 0.4453
  36. 710
  37. 80300
  38. 4.161
  39. 2384
  40. 4396

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