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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 199 · 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. 1.102.4 ÷ 1000 =
  2. 2.472.1 ÷ 100 =
  3. 3.281.7 × 1000 =
  4. 4.25.72 × 10 =
  5. 5.114.5 ÷ 10 =
  6. 6.3.1 × 100 =
  7. 7.31.78 × 100 =
  8. 8.131.3 × 10 =
  9. 9.7.31 ÷ 10 =
  10. 10.345.9 × 100 =
  11. 11.28.63 ÷ 100 =
  12. 12.419.5 ÷ 100 =
  13. 13.8.97 × 1000 =
  14. 14.266.8 ÷ 1000 =
  15. 15.386.1 ÷ 1000 =
  16. 16.23.93 × 100 =
  17. 17.251.6 ÷ 100 =
  18. 18.157.3 ÷ 10 =
  19. 19.457.8 × 100 =
  20. 20.141.5 × 10 =
  21. 21.198.1 × 10 =
  22. 22.107.9 ÷ 10 =
  23. 23.35.93 ÷ 10 =
  24. 24.25.67 ÷ 100 =
  25. 25.9.8 × 1000 =
  26. 26.34.16 × 100 =
  27. 27.28.59 × 10 =
  28. 28.6.06 × 100 =
  29. 29.32.09 × 10 =
  30. 30.192.5 ÷ 10 =
  31. 31.257.1 × 1000 =
  32. 32.273.4 × 10 =
  33. 33.10.72 ÷ 1000 =
  34. 34.23.98 ÷ 10 =
  35. 35.207.4 × 1000 =
  36. 36.25.61 ÷ 10 =
  37. 37.122.3 × 1000 =
  38. 38.32.2 × 10 =
  39. 39.10.79 × 100 =
  40. 40.17.61 × 10 =

Answer key

  1. 0.1024
  2. 4.721
  3. 281700
  4. 257.2
  5. 11.45
  6. 310
  7. 3178
  8. 1313
  9. 0.731
  10. 34590
  11. 0.2863
  12. 4.195
  13. 8970
  14. 0.2668
  15. 0.3861
  16. 2393
  17. 2.516
  18. 15.73
  19. 45780
  20. 1415
  21. 1981
  22. 10.79
  23. 3.593
  24. 0.2567
  25. 9800
  26. 3416
  27. 285.9
  28. 606
  29. 320.9
  30. 19.25
  31. 257100
  32. 2734
  33. 0.01072
  34. 2.398
  35. 207400
  36. 2.561
  37. 122300
  38. 322
  39. 1079
  40. 176.1

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