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Published byEugene Lyons Modified over 9 years ago
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Friday, December 3 Please make sure your name is on Practice 6-5 and it is completed. If it is not, let me know so that I can fill out your ZAP Fill in planner – today’s assignment is Practice 6-6/6-7 Bell Work (Write each percent as a decimal)
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Today’s Objective(s) SWBAT – find a part of a whole and a percent – find a whole amount – write and solve percent equations – use equations in solving percent problems Why? – To solve Real world problems involving earnings and surveys.
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Finding Part of a Whole Example 1: What is 65% of 245? You can solve a “percent of” problem by writing a proportion. Write cross products Divide each side by 100 Simplify. 65% of 245 is 159.25
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Finding a Percent Example 2: What percent of 60 is 52? Round to the nearest tenth Write a proportion Write cross products Divide each side by 60 Simplify Round. 52 is approximately 86.7% of 60
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Finding a whole amount Example 3: 207 is 46% of what number? Write a proportion Write cross products Divide each side by 46 Simplify. 207 is 46% of 450
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Using Equations to Solve Percent Problems Example 4: What is 85% of 62? Write the percent as a decimal and write an equation. Simplify. 85% of 62 is 52.7
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Using Equations to Solve Percent Problems Example 5: What percent of 48 is 54? Write the percent as a decimal and write an equation. Divide each side by 54 Simplify Change the decimal to a percent by moving the decimal point to the right 2 places.
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