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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 901 · 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. 1.302.2 ÷ 1000 =
  2. 2.17.1 ÷ 10 =
  3. 3.172.3 × 1000 =
  4. 4.3.07 ÷ 10 =
  5. 5.17.29 × 100 =
  6. 6.288.1 ÷ 1000 =
  7. 7.208.8 ÷ 10 =
  8. 8.109.7 × 100 =
  9. 9.20.16 ÷ 10 =
  10. 10.43.4 × 100 =
  11. 11.427.1 ÷ 100 =
  12. 12.29.93 × 10 =
  13. 13.77.9 × 1000 =
  14. 14.49.17 ÷ 10 =
  15. 15.149.3 × 10 =
  16. 16.32.05 ÷ 1000 =
  17. 17.16.9 × 1000 =
  18. 18.456.9 ÷ 1000 =
  19. 19.40.98 ÷ 10 =
  20. 20.2.1 × 10 =
  21. 21.2.27 × 1000 =
  22. 22.261.6 × 10 =
  23. 23.160.5 × 100 =
  24. 24.1.54 ÷ 100 =
  25. 25.119.1 ÷ 1000 =
  26. 26.82.6 × 10 =
  27. 27.24.21 × 1000 =
  28. 28.2.52 × 100 =
  29. 29.46.82 ÷ 1000 =
  30. 30.69.5 × 1000 =
  31. 31.16.29 ÷ 100 =
  32. 32.436.3 ÷ 1000 =
  33. 33.470.2 × 10 =
  34. 34.5.65 ÷ 1000 =
  35. 35.79.2 × 100 =
  36. 36.5.48 ÷ 100 =
  37. 37.470.8 ÷ 100 =
  38. 38.6.01 × 10 =
  39. 39.48.6 ÷ 100 =
  40. 40.34.28 ÷ 1000 =

Answer key

  1. 0.3022
  2. 1.71
  3. 172300
  4. 0.307
  5. 1729
  6. 0.2881
  7. 20.88
  8. 10970
  9. 2.016
  10. 4340
  11. 4.271
  12. 299.3
  13. 77900
  14. 4.917
  15. 1493
  16. 0.03205
  17. 16900
  18. 0.4569
  19. 4.098
  20. 21
  21. 2270
  22. 2616
  23. 16050
  24. 0.0154
  25. 0.1191
  26. 826
  27. 24210
  28. 252
  29. 0.04682
  30. 69500
  31. 0.1629
  32. 0.4363
  33. 4702
  34. 0.00565
  35. 7920
  36. 0.0548
  37. 4.708
  38. 60.1
  39. 0.486
  40. 0.03428

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