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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 757 · 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. 1.367.8 × 10 =
  2. 2.9.13 × 1000 =
  3. 3.17.88 × 100 =
  4. 4.27.89 × 10 =
  5. 5.229.1 ÷ 1000 =
  6. 6.25.6 × 1000 =
  7. 7.321.6 ÷ 10 =
  8. 8.9.18 ÷ 10 =
  9. 9.451.2 × 100 =
  10. 10.466.4 ÷ 100 =
  11. 11.7.84 ÷ 100 =
  12. 12.305.2 × 100 =
  13. 13.15.67 × 1000 =
  14. 14.39.39 × 1000 =
  15. 15.334.6 × 10 =
  16. 16.267.1 ÷ 10 =
  17. 17.8.42 × 10 =
  18. 18.31.8 ÷ 100 =
  19. 19.38.11 × 1000 =
  20. 20.55.3 × 1000 =
  21. 21.41.97 × 10 =
  22. 22.370.8 × 1000 =
  23. 23.132.8 × 100 =
  24. 24.20.81 ÷ 10 =
  25. 25.137.1 ÷ 100 =
  26. 26.237.8 × 1000 =
  27. 27.254.1 × 1000 =
  28. 28.115.9 ÷ 100 =
  29. 29.84.4 ÷ 10 =
  30. 30.9.73 ÷ 10 =
  31. 31.155.1 × 100 =
  32. 32.281.7 ÷ 10 =
  33. 33.15.28 × 100 =
  34. 34.19.78 × 10 =
  35. 35.22.71 ÷ 10 =
  36. 36.237.9 ÷ 10 =
  37. 37.42.81 ÷ 1000 =
  38. 38.14.01 × 100 =
  39. 39.10.3 ÷ 100 =
  40. 40.196.3 × 10 =

Answer key

  1. 3678
  2. 9130
  3. 1788
  4. 278.9
  5. 0.2291
  6. 25600
  7. 32.16
  8. 0.918
  9. 45120
  10. 4.664
  11. 0.0784
  12. 30520
  13. 15670
  14. 39390
  15. 3346
  16. 26.71
  17. 84.2
  18. 0.318
  19. 38110
  20. 55300
  21. 419.7
  22. 370800
  23. 13280
  24. 2.081
  25. 1.371
  26. 237800
  27. 254100
  28. 1.159
  29. 8.44
  30. 0.973
  31. 15510
  32. 28.17
  33. 1528
  34. 197.8
  35. 2.271
  36. 23.79
  37. 0.04281
  38. 1401
  39. 0.103
  40. 1963

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