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7-7 Percent of a Number and 7-8 The percent Proportion
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Turn and Talk <ul><li>What’s your favorite subject in school? </li></ul>
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Favorite Subject <ul><li>A graph at the right shows the results of a survey in which 1,016 people were asked their favorite subject. </li></ul><ul><li>About how many of them said language? </li></ul><ul><li>How did you estimate? </li></ul>Science Math History Language PE
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Favorite Subject <ul><li>Suppose you pass 50 people at the mall, do you think more or less than 25 of them would choose PE as their favorite subject? Explain </li></ul>Science Math History Language PE
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Using PROPORTIONS!!! <ul><li>The graphic shows that 12% of the 1,016 students chose science as their favorite subject. </li></ul><ul><li>How many of the students chose science? </li></ul>Science Math History Language PE or
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Using EQUATIONS!!! <ul><li>The graphic shows that 12% of the 1,016 students chose science as their favorite subject. </li></ul><ul><li>How many of the students chose science? </li></ul>Science Math History Language PE What does mean? of
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Example 1 <ul><li>Out of 1,423 adults surveyed, 30% said they knew the name of their mail carrier. How many of the people surveyed knew their mail carrier’s name? </li></ul><ul><li>Use a proportion and equation (T-chart) </li></ul>
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Example 2 <ul><li>What number is 140% of 32? </li></ul>
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Your Turn Work one with a proportion and one with an equation <ul><li>Fifty percent of 140 is what number? </li></ul><ul><li>Find 37.5% of 64 </li></ul>
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Example 6 <ul><li>What percent of $15 is $9? </li></ul>
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Example 7 With a partner- set up the proportion on each problem <ul><li>What percent of 6 is 3? </li></ul><ul><li>What number is 50% of 6? </li></ul><ul><li>3 is 50% of what number? </li></ul>
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Example 8 <ul><li>What number is 40% of 120? </li></ul>
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Example 9 <ul><li>18 is 25% of what number? </li></ul>
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Example 10 <ul><li>What percent of 24 is 18? </li></ul>
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Example 11 <ul><li>What number is 30% of 150? </li></ul>
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Example 12 <ul><li>12 is 80% of what number? </li></ul>
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Your Turn <ul><li>What number is 5% of 60? </li></ul><ul><li>80 is 75% of what number? </li></ul>
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Journal <ul><li>Which method do you prefer? </li></ul><ul><li>Why? </li></ul>
Clipping is a handy way to collect and organize the most important slides from a presentation. You can keep your great finds in clipboards organized around topics.
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