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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 601 · 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. 1.134.7 × 100 =
  2. 2.27.68 × 10 =
  3. 3.30.44 ÷ 10 =
  4. 4.25.25 ÷ 1000 =
  5. 5.7.87 × 1000 =
  6. 6.48.18 ÷ 1000 =
  7. 7.26.16 ÷ 100 =
  8. 8.43.85 ÷ 10 =
  9. 9.75.2 ÷ 10 =
  10. 10.46.37 × 10 =
  11. 11.13.4 ÷ 10 =
  12. 12.31.13 ÷ 1000 =
  13. 13.429.9 × 10 =
  14. 14.25.01 ÷ 10 =
  15. 15.26.75 × 1000 =
  16. 16.21.14 × 1000 =
  17. 17.29.66 ÷ 10 =
  18. 18.10.24 × 1000 =
  19. 19.173.3 × 100 =
  20. 20.71.1 ÷ 100 =
  21. 21.357.4 ÷ 1000 =
  22. 22.39.86 × 10 =
  23. 23.227.1 ÷ 100 =
  24. 24.27.32 ÷ 10 =
  25. 25.49.56 × 100 =
  26. 26.19.7 ÷ 1000 =
  27. 27.24.01 ÷ 1000 =
  28. 28.339.9 ÷ 1000 =
  29. 29.45.51 ÷ 100 =
  30. 30.431.7 × 100 =
  31. 31.301.8 × 10 =
  32. 32.349.1 × 10 =
  33. 33.13.91 ÷ 10 =
  34. 34.64.5 ÷ 10 =
  35. 35.35.71 ÷ 1000 =
  36. 36.86.2 ÷ 100 =
  37. 37.90.1 × 10 =
  38. 38.300.1 × 10 =
  39. 39.31.1 × 10 =
  40. 40.106.2 × 100 =

Answer key

  1. 13470
  2. 276.8
  3. 3.044
  4. 0.02525
  5. 7870
  6. 0.04818
  7. 0.2616
  8. 4.385
  9. 7.52
  10. 463.7
  11. 1.34
  12. 0.03113
  13. 4299
  14. 2.501
  15. 26750
  16. 21140
  17. 2.966
  18. 10240
  19. 17330
  20. 0.711
  21. 0.3574
  22. 398.6
  23. 2.271
  24. 2.732
  25. 4956
  26. 0.0197
  27. 0.02401
  28. 0.3399
  29. 0.4551
  30. 43170
  31. 3018
  32. 3491
  33. 1.391
  34. 6.45
  35. 0.03571
  36. 0.862
  37. 901
  38. 3001
  39. 311
  40. 10620

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