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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 128 · 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. 1.265.2 ÷ 100 =
  2. 2.38.38 × 100 =
  3. 3.208.1 × 1000 =
  4. 4.10.31 × 100 =
  5. 5.10.12 × 100 =
  6. 6.453.7 × 1000 =
  7. 7.41.01 × 100 =
  8. 8.172.2 × 10 =
  9. 9.391.1 ÷ 100 =
  10. 10.241.1 ÷ 10 =
  11. 11.32.18 × 10 =
  12. 12.25.94 ÷ 100 =
  13. 13.435.9 × 100 =
  14. 14.116.7 × 1000 =
  15. 15.494.3 ÷ 100 =
  16. 16.425.6 ÷ 10 =
  17. 17.90.1 ÷ 1000 =
  18. 18.18.67 ÷ 100 =
  19. 19.29.71 ÷ 10 =
  20. 20.37.84 × 100 =
  21. 21.105.2 ÷ 100 =
  22. 22.13.34 × 10 =
  23. 23.44.53 × 10 =
  24. 24.305.5 ÷ 10 =
  25. 25.36.07 ÷ 100 =
  26. 26.94.9 × 1000 =
  27. 27.78.2 × 100 =
  28. 28.6.01 × 1000 =
  29. 29.2.33 ÷ 10 =
  30. 30.418.5 ÷ 1000 =
  31. 31.46.4 × 10 =
  32. 32.114.1 ÷ 1000 =
  33. 33.25.13 ÷ 1000 =
  34. 34.64.7 ÷ 10 =
  35. 35.381.4 ÷ 10 =
  36. 36.208.8 × 10 =
  37. 37.14.16 ÷ 10 =
  38. 38.19.27 ÷ 1000 =
  39. 39.381.8 ÷ 1000 =
  40. 40.227.6 × 100 =

Answer key

  1. 2.652
  2. 3838
  3. 208100
  4. 1031
  5. 1012
  6. 453700
  7. 4101
  8. 1722
  9. 3.911
  10. 24.11
  11. 321.8
  12. 0.2594
  13. 43590
  14. 116700
  15. 4.943
  16. 42.56
  17. 0.0901
  18. 0.1867
  19. 2.971
  20. 3784
  21. 1.052
  22. 133.4
  23. 445.3
  24. 30.55
  25. 0.3607
  26. 94900
  27. 7820
  28. 6010
  29. 0.233
  30. 0.4185
  31. 464
  32. 0.1141
  33. 0.02513
  34. 6.47
  35. 38.14
  36. 2088
  37. 1.416
  38. 0.01927
  39. 0.3818
  40. 22760

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