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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 66 · 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. 1.35.35 × 1000 =
  2. 2.4.41 × 100 =
  3. 3.269.7 ÷ 10 =
  4. 4.12.31 × 100 =
  5. 5.492.7 × 100 =
  6. 6.6.52 × 100 =
  7. 7.16.78 × 10 =
  8. 8.428.3 ÷ 10 =
  9. 9.32.58 ÷ 100 =
  10. 10.215.6 ÷ 10 =
  11. 11.188.6 ÷ 1000 =
  12. 12.5.76 ÷ 1000 =
  13. 13.117.3 ÷ 10 =
  14. 14.20.38 × 1000 =
  15. 15.5.3 ÷ 1000 =
  16. 16.11.1 × 1000 =
  17. 17.32.22 ÷ 1000 =
  18. 18.16.44 × 100 =
  19. 19.6.92 ÷ 10 =
  20. 20.288.7 ÷ 100 =
  21. 21.88.1 × 1000 =
  22. 22.48.79 ÷ 10 =
  23. 23.27.02 × 100 =
  24. 24.459.3 × 10 =
  25. 25.0.41 × 10 =
  26. 26.15.39 × 10 =
  27. 27.157.6 × 10 =
  28. 28.127.4 × 10 =
  29. 29.252.1 ÷ 10 =
  30. 30.14.87 × 10 =
  31. 31.0.44 ÷ 10 =
  32. 32.33.39 × 100 =
  33. 33.24.1 × 100 =
  34. 34.402.8 ÷ 100 =
  35. 35.147.5 × 1000 =
  36. 36.23.51 ÷ 1000 =
  37. 37.24.2 × 10 =
  38. 38.48.48 × 100 =
  39. 39.145.1 ÷ 1000 =
  40. 40.362.1 ÷ 100 =

Answer key

  1. 35350
  2. 441
  3. 26.97
  4. 1231
  5. 49270
  6. 652
  7. 167.8
  8. 42.83
  9. 0.3258
  10. 21.56
  11. 0.1886
  12. 0.00576
  13. 11.73
  14. 20380
  15. 0.0053
  16. 11100
  17. 0.03222
  18. 1644
  19. 0.692
  20. 2.887
  21. 88100
  22. 4.879
  23. 2702
  24. 4593
  25. 4.1
  26. 153.9
  27. 1576
  28. 1274
  29. 25.21
  30. 148.7
  31. 0.044
  32. 3339
  33. 2410
  34. 4.028
  35. 147500
  36. 0.02351
  37. 242
  38. 4848
  39. 0.1451
  40. 3.621

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