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MATH 6 - PERCENTAGES

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DEFINE: PERCENT   a ratio that compares a number with 100  
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PERCENTS CAN BE WRITTEN AS...   fractions or decimals  
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TO REWRITE A PERCENT AS A DECIMAL...   write the percent over 100 and rewrite in lowest terms  
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TO REWRITE A PERCENT AS A DECIMAL...   move the decimal point two places to the LEFT  
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TO REWRITE A DECIMAL AS A PERCENT...   move the decimal point two places to the RIGHT  
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TO REWRITE A FRACTION AS A DECIMAL...   use division to convert the fraction to a decimal then move the decimal point two places to the RIGHT  
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MENTAL MATH - TO FIND 50% OF A NUMBER...   divide by 2 or take 1/2 of the number  
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MENTAL MATH: TO TAKE 10% OF A NUMBER   move decimal point ONE place to the LEFT  
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MENTAL MATH: TO TAKE 1% OF A NUMBER...   move the decimal point TWO places to the LEFT  
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TWO WAYS TO SOLVE A PERCENT PROBLEM ARE..   1) write and solve an equation; 2) set-up a proportion  
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PROPORTION TO CALCULATE PERCENT INCREASES OR DECREASES...   percent change/100 = amt. of change/original amt  
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Created by: hgerlach
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