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### Grade 6 - Mathematics8.2 Percentages

 To find 50% of a number, find half of that number. To find 25% of a number, find one quarter of that number. To find 10% of a number, divide the number by ten. Examples: 50% of 50 is 25 50% of 60 is 30 50% of 200 is 100 50% of 12 is 6 25% of 40 is 10 25% of 16 is 4 25% of 100 is 25 25% of 240 is 60 10% of 10 is 1 10% of 20 is 2 10% of 30 is 3 10% of 100 is 10 Note the following relationships between percentages and fractions: 100% = 1 whole 50% = 1/2 = one half 25% = 1/4 = one quarter 10% = 1/10 You can use the above facts to solve problems involving other percentages. Examples: Since 10% of 120 is 12, 30% of 120 is 3 x 12 (3 times 12) = 36 Since 25% of 100 is 25, then 75% of 100 is 3 x 25 (3 times 25) = 75 Directions: Answer the following questions. Also write at least ten examples of your own.
 Q 1: A dress is selling for \$100after 20% discount. What is the original selling price?\$120\$80\$200\$125 Q 2: 35% of children in a class are boys. What percentage are girls?unknown40%65%75% Q 3: Eric invited 50 friends to his birthday party. 50% of them could not attend the party. How many friends attended the party?30402550 Q 4: 70% of the children in a school buy lunch at the cafeteria and the rest bring their lunch from home. What percentage of the children bring lunch from home?40%32%unknown30% Q 5: A television is on sale for \$900. If the sale price is 10 % less than the regular price. What was the regular price? \$1000\$1100\$910\$800 Q 6: If 10% of 130 is 13, then 30% of 130 is ______.24364339 Q 7: If the sales tax on a \$30.00 item is \$1.80, what is the sales tax rate?10%6%5%8% Q 8: Jill bought a notebook for \$1.50 plus 6% sales tax. How much did she pay?\$1.56\$1.59\$1.75\$1.20 Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!

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