1. Ratios and Proportions Percent Change

2. Proportion – Statement showing two ratios as equal

4. All of these are proportions because the cross products are equal

11. Example

14. Practice Problems Solve each proportion.

15. Practice Problems Solve each proportion.

16. Practice Problems Solve each proportion.

17. Practice Problems

18. Capture - Recapture Complete The worksheet Answers all the questions on the bottom of sheet Turn in one sheet per person

19. Capture / Recapture - Example

22. Percent Change

23. Vocabulary Percent Change – When an increase or decrease is expressed as a percentage Percent Increase – A change that is greater than the original Percent Decrease – A change that is less than the original

29. Practice Problems State whether each percent of change is a percent of increase or a percent of decrease. Then find each percent of change. Round to the nearest whole percent.

30. Practice Problems State whether each percent of change is a percent of increase or a percent of decrease. Then find each percent of change. Round to the nearest whole percent.

31. Practice Problems

33. Use cross product to determine whether each pair of ratios form a proportion.

34. Practice Problems Use cross product to determine whether each pair of ratios form a proportion.

35. Practice Problems Use cross product to determine whether each pair of ratios form a proportion.

36. Practice Problems Solve each proportion.

37. Practice Problems Solve each proportion.

38. Practice Problems

40. State whether each percent of change is a percent of increase or a percent of decrease. Then find each percent of change. Round to the nearest whole percent.

41. Practice Problems State whether each percent of change is a percent of increase or a percent of decrease. Then find each percent of change. Round to the nearest whole percent.

42. Practice Problems

44. Homework – Write in planner 3-6 Ratios and Proportions (2 pages) 3-7 Percent Change (2 pages) Even Problems