Download Chapter 6 review

th
8
Grade Math
Chapter 6 Review
Chapter 6 Review
1)
a) 30 is 20% of what number?
b) What is 55% of 342?
c) 82 is what percent of 50?
Chapter 6 Review
1)
a) 30 is 20% of what number? 150
b) What is 55% of 342? 188.1
c) 82 is what percent of 50? 164%
Chapter 6 Review
2)
a) What is the percent change if you go from
642 to 700?
b) Old Price: $3.50
New Price: $4.00
What is the percent change?
Chapter 6 Review
2)
a) What is the percent change if you go from
642 to 700? 9% increase
b) Old Price: $3.50
14.3%
New Price: $4.00
increase
What is the percent change?
Chapter 6 Review
3)
a) Write 7/16 as a decimal.
b) Write 7/16 as a percent.
c) Write 32% as a decimal.
d) Write 32% as a fraction.
Chapter 6 Review
3)
a) Write 7/16 as a decimal.
0.4375
b) Write 7/16 as a percent.
43.75%
c) Write 32% as a decimal.
d) Write 32% as a fraction.
0.32
32/100
= 8/25
Chapter 6 Review
4)
a) Write 8.7 as a percent.
b) Write 0.3% as a decimal.
c) Sticker price is $15.25.
If the sales tax is 6%, what is the final
cost?
Chapter 6 Review
4)
a) Write 8.7 as a percent.
870%
b) Write 0.3% as a decimal. 0.003
c) Sticker price is $15.25.
If the sales tax is 6%, what is the final
cost?
Tax is $0.92 so the
total is $16.17
Chapter 6 Review
5)
a) Original price is $3100. After a 15%
discount, what would the price be?
b) If there is a 7% sales tax, what would the
final price be?
Chapter 6 Review
5)
a) Original price is $3100. After a 15%
discount, what would the price be?
3100 – 654 = $2635
b) If there is a 7% sales tax, what would the
final price be?
2635 + 184.45 = $2819.45
Chapter 6 Review
6)
a) You invest $5000 for 6 years at a simple
interest rate of 3%. At the end of that
time, how much money do you have?
Chapter 6 Review
6)
a) You invest $5000 for 6 years at a simple
interest rate of 3%. At the end of that
time, how much money do you have?
$5000 + 900 = $5900
Chapter 6 Review
7)
a) Old price is $350. New price is $297.50.
What is the percent of discount?
b) Sales tax is 6%. Price tag reads $210.00.
What is the final cost?
Chapter 6 Review
7)
a) Old price is $350. New price is $297.50.
What is the percent of discount?
15% decrease
b) Sales tax is 6%. Price tag reads $210.00.
What is the final cost?
$210 + 12.60 = $222.60
Chapter 6 Review
8)
a) 40% of the candies in a bag are red.
There are 20 red candies. How many
total candies are there in the bag?
Chapter 6 Review
8)
a) 40% of the candies in a bag are red.
There are 20 red candies. How many
total candies are there in the bag?
50 candies total