rio m40 Chapter 8

rio m40 Chapter 8 - Chapter 8 % PER 100 27% 27 PER 100...

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1 Chapter 8 % PER 100 PARTS PER 100 PARTS 100 27 % 27 PER 100 27 PARTS PER 100 PARTS 100 27 Shade 3% Shade 40% Shade 57% Shade 112% Show me three different ways to shade 25% Show me three different ways to shade 50%
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2 Fraction Decimal % PER 100 PARTS PER 100 PARTS 100 100 27 % 27 PER 100 27 PARTS PER 100 PARTS 100 27 100 27 = 0.27 33 % PER 100 PARTS PER 100 PARTS 100 100 = 3 1 2 % PER 100 PARTS PER 100 PARTS 100 100 = 113 % PER 100 PARTS PER 100 PARTS 100 100 = 1.3 % PER 100 PARTS PER 100 PARTS 100 100 =
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3 5 1 0.2 = % move the decimal Divide to the right two units .2 20% Last place value = move the decimal Denominator(zeros=decimal places) to the left two units .2 = 10 = = 20 % Percent means per 100 20 % = =
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4 Changing a fraction to a Decimal. Round to the nearest thousandth. 7 3 2 Changing a fraction to a Percent. . 17 7 7 3 2 Changing a percent to a decimal. % 75 . 8 % 7 3 2 Changing a percent to a fraction. % 75 . 8 % 7 3 2 Changing a decimal to a percent 0.31 10.375 Changing a decimal to a fraction 0.31 10.375 17 7 % 35 % 35
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5 Decimal Percent Mixed number/fraction .23 33% 22.5% .515 0.005% 11111.0001 35.1 % 3 1 33 % 4 1 5 Exact fractional percent 3 2 1.8 approximate the following by shading in the rectangle: 4 1 of is 5 2 of is 4 3 of is 25% of is 30% of is 40% of is 10% of is 50% of is 100 21 25 2 5 5 2 4 3 16 7
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6 Find the following by multiplying: 25% of 42 is_________________ 33% of 35 is_________________ 3% of 100 is_________________ 20% discount on $400 is a_____________________discount 35% increase on a salary of $40,000 is a__________________increase on a salary 8.25% sales tax on a purchase of $42.95 is ______________________in tax 3 % commission on a sale of $35,000 is a ___________________________commission 2% of the 30 people in this class love math. __________________people in this class love math. 4.5% simple interest APR on $3500 loan is a fee of ____________________per year. Find the missing percentage. Find the missing percentage. You pay 80% of what an item sells for. If the item sells for $495.25, then you pay __________________. What percent discount is the above__________ What amount is the discount above.___________________
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Answer the following mentally (no calculator): 1) Find the given percentage of 50: a) 10% b) 20% c) 60% d) 5% e)1% 2) Find the given percentage of 40: a) 10% b) 20% c) 60% d) 5% e)1% 3) Find the given percentage of 25: a) 10% b) 20% c) 60% d) 5% e)1% (No calculator) i)You are looking at shirt that costs $40 and you have a 20% off coupon. How much will you pay before tax? ii) What if you find a 25% of coupon. How much will you pay before tax? (hint:25% = 20%+5%) iii) You find a Vase that is originally priced $60 and is clearance 50%. How much will you pay before tax if you use your 25% off coupon? iiii)
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This note was uploaded on 01/13/2012 for the course MATH 30 taught by Professor Ianmccance during the Spring '12 term at Harvard.

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rio m40 Chapter 8 - Chapter 8 % PER 100 27% 27 PER 100...

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