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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 699 · 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. 1.314.4 ÷ 100 =
  2. 2.32.5 × 10 =
  3. 3.429.5 × 10 =
  4. 4.20.49 ÷ 100 =
  5. 5.20.85 ÷ 1000 =
  6. 6.10.25 ÷ 100 =
  7. 7.104.5 × 1000 =
  8. 8.359.2 ÷ 10 =
  9. 9.38.04 ÷ 100 =
  10. 10.300.7 × 100 =
  11. 11.113.2 × 100 =
  12. 12.15.9 × 1000 =
  13. 13.18.19 ÷ 10 =
  14. 14.29.41 × 1000 =
  15. 15.38.84 ÷ 10 =
  16. 16.129.2 ÷ 10 =
  17. 17.43.31 ÷ 10 =
  18. 18.27.1 × 10 =
  19. 19.6.01 ÷ 100 =
  20. 20.103.1 ÷ 100 =
  21. 21.179.4 × 1000 =
  22. 22.25.81 × 100 =
  23. 23.212.6 × 10 =
  24. 24.33.8 × 10 =
  25. 25.1.78 ÷ 100 =
  26. 26.0.31 ÷ 10 =
  27. 27.40.62 ÷ 100 =
  28. 28.457.2 ÷ 1000 =
  29. 29.38.18 ÷ 1000 =
  30. 30.33.91 × 100 =
  31. 31.140.1 × 1000 =
  32. 32.53.1 × 10 =
  33. 33.36.97 × 10 =
  34. 34.196.2 ÷ 10 =
  35. 35.5.3 ÷ 1000 =
  36. 36.6.11 × 10 =
  37. 37.210.7 ÷ 100 =
  38. 38.42.71 ÷ 100 =
  39. 39.357.4 ÷ 100 =
  40. 40.47.71 ÷ 100 =

Answer key

  1. 3.144
  2. 325
  3. 4295
  4. 0.2049
  5. 0.02085
  6. 0.1025
  7. 104500
  8. 35.92
  9. 0.3804
  10. 30070
  11. 11320
  12. 15900
  13. 1.819
  14. 29410
  15. 3.884
  16. 12.92
  17. 4.331
  18. 271
  19. 0.0601
  20. 1.031
  21. 179400
  22. 2581
  23. 2126
  24. 338
  25. 0.0178
  26. 0.031
  27. 0.4062
  28. 0.4572
  29. 0.03818
  30. 3391
  31. 140100
  32. 531
  33. 369.7
  34. 19.62
  35. 0.0053
  36. 61.1
  37. 2.107
  38. 0.4271
  39. 3.574
  40. 0.4771

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