basic percents
percent change
discounts and taxes
Interest
Conversions
100
what does percent mean?
per hundred
100
The price of a pair of jeans went from
$35 to $22. Is this a decrease or increase?
decrease
100
Categorize each item below as a subtraction or addition:
1) discount
2) tax
3) percent off
discount is subtraction
tax is an addition
percent off is subtraction
100
What does the letter n stand for in the formula for compound interest?
Number of times compounded per year
100
Express 3.5% as a decimal
.035
200
what is the proportion you can use to solve any percent problem?
part/whole = percent/100
200
The price of a notebook went from 3 dollars to 1 dollar. What is the percent change?
2/3=x/100
x = 66.7% decrease
200
A pair of shoes regularly priced at $90 is on sale for 35% off. How much is the discount?
x/90 = 35/100
x = $31.50 is the discount
200
What is the simple interest of a 4 year loan of $5,000, borrowed at a rate of 8%?
$1,600
200
What is 3 2/100 in decimal form?
2/100 = .02
so 3 and 2/100 = 3.02
300
what percent is 8 of 23?
8/23 = x/100
x = 34.8%
300
The gas price went from
$3.20 per gallon to $3.60 per gallon. What is the percent change?
3.60 - 3.20 = .40
.40/3.20 = x/100
x = 12.5% increase
300
Bobby bought two shirts that sold for $25.00 each. If tax is 8%, how much will he pay for tax on two shirts?
x/50 = 8/100
x = $4.00 tax charge
300
What is the total amount to be repaid of an $80,000, 12 year mortgage borrowed at 4.5% interest
$123,2000
300
Express 65% as a fraction in simplest terms.
13/20
400
what is 25% of $130?
x/130 = 25/100
x = $32.50
400
Veryl's ACT score went from 14 to 20. What is the percent change?
6/14 = x/100
x = 42.9% increase
400
An apple laptop, originally priced at $2,500.00, is on sale for 15% off. What is the sale price of the laptop?
x/2,500 = 15/100
x = $375 dollars off
$2,500 - $375 = $2,125 sale price
400
What is the total amount to be repaid after 7 years of a $10,000 loan compounded quarterly at a rate of 3%? (Round to the nearest hundredths place)
$12,327.12
400
Express .95 as a fraction in simplest terms
19/20
500
34 is 40% of what?
34/x = 40/100
x=85
500
In Ms. Ocampo’s first period, the number of students went from 5 to 12 students at 8:45am. What was the percent change?
12 - 5 = 7
7/5 = x/100
x = 140% increase
500
A pair of boots originally priced at $78.50, is on sale for 60% off. If tax is 8%, what is the final price for the pair of boots to the nearest cent?
x/78.50 = 60/100
x = $47.10 discount
78.50 - 47.10 = $31.40 discount price
x/31.40 = 8/100
x= $2.51 sales tax
31.40 + 2.51 = $33.91 final price
500
What is the amount to be repaid of a 16 year student loan of $55,000 compounded daily at a rate of 2.4%? (Round to the nearest hundredths place)
$80,746.98
500
Express 2.48 as a fraction in simplest terms.
2 12/25
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