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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 755 · 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. 1.12.19 ÷ 10 =
  2. 2.92.1 × 100 =
  3. 3.14.41 ÷ 10 =
  4. 4.192.8 × 100 =
  5. 5.127.3 ÷ 10 =
  6. 6.47.2 ÷ 10 =
  7. 7.9.51 × 100 =
  8. 8.428.9 × 10 =
  9. 9.314.6 × 1000 =
  10. 10.39.41 × 1000 =
  11. 11.255.1 ÷ 100 =
  12. 12.48.81 ÷ 100 =
  13. 13.443.2 ÷ 10 =
  14. 14.48.3 × 100 =
  15. 15.17.2 × 1000 =
  16. 16.39.37 × 10 =
  17. 17.14.61 × 100 =
  18. 18.89.6 ÷ 10 =
  19. 19.16.98 × 100 =
  20. 20.285.1 ÷ 100 =
  21. 21.23.2 × 100 =
  22. 22.24.4 ÷ 100 =
  23. 23.0.37 × 100 =
  24. 24.40.3 × 10 =
  25. 25.488.3 ÷ 100 =
  26. 26.0.21 × 1000 =
  27. 27.142.3 × 10 =
  28. 28.39.5 × 10 =
  29. 29.39.42 ÷ 1000 =
  30. 30.28.39 ÷ 1000 =
  31. 31.269.6 × 1000 =
  32. 32.237.7 × 100 =
  33. 33.480.7 ÷ 100 =
  34. 34.256.8 ÷ 1000 =
  35. 35.450.3 × 10 =
  36. 36.47.91 × 10 =
  37. 37.78.7 × 10 =
  38. 38.170.4 × 10 =
  39. 39.22.57 ÷ 100 =
  40. 40.0.57 × 10 =

Answer key

  1. 1.219
  2. 9210
  3. 1.441
  4. 19280
  5. 12.73
  6. 4.72
  7. 951
  8. 4289
  9. 314600
  10. 39410
  11. 2.551
  12. 0.4881
  13. 44.32
  14. 4830
  15. 17200
  16. 393.7
  17. 1461
  18. 8.96
  19. 1698
  20. 2.851
  21. 2320
  22. 0.244
  23. 37
  24. 403
  25. 4.883
  26. 210
  27. 1423
  28. 395
  29. 0.03942
  30. 0.02839
  31. 269600
  32. 23770
  33. 4.807
  34. 0.2568
  35. 4503
  36. 479.1
  37. 787
  38. 1704
  39. 0.2257
  40. 5.7

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