Conversions
Write the decimal 0.2 as a simplified fraction and percent.
1/5 and 20%
What percent of 50 is 12?
24%
What is the percent of change if a child went from 45 inches to 72 inches?
60% increase
A lamp costs $60. If it's on sale for 15% off, what is the price after the discount?
$51
You deposit $400 into a savings account. The account earns 6% interest per year.
What is the interest earned after 2 years?
$48
Write 64% as a simplified fraction and decimal.
0.64
16/25
1/4 is 50% of what number?
1/2
What is the percent of change from 32 to 19?
Round to the nearest tenth of a percent.
0.40625 so about 40.6%
Solve for the selling price of a $32 item after a 40% markup.
$44.80
You deposit $400 into a savings account. The account earns 6% interest per year.
What is the total balance after 2 years?
$448
Write 3/5 as a decimal and percent.
0.6 and 60%
If 60% of the 40 beach chairs are rented, how many chairs were rented?
24 chairs
You estimate there are 78 marbles in the jar. The actual amount is 62 marbles. Find the percent error.
Round to the nearest percent.
0.2580, so about 26%
What was the original price of a watch if you paid $120 with a 20% discount?
$150
How long does it take an account with a principal of $200 to earn $16 in interest at a simple annual interest rate of 4%?
2 years
Write 0.35 as a simplified fraction and percent.
7/20 and 35%
What is the savings if you have a coupon for 15% off a $24 item.
$3.60
You estimate 18 people will come to the party, but 23 actually show up. What is the percent error?
0.2173 so about 22% error.
You buy a new swimsuit for $35 and googles for $12. What is the total cost if you have to pay 7% tax?
Items = $47.00
Tax = $3.29
Total = $50.29
If you deposit $550 into an account that earns 4% interest, how much interest will you earn after 6 months?
$11
Order from least to greatest:
20.2% , 1/5 , 0.21 , 2/7
1/5 ,20.2%, 0.21 , 2/7
You can rent a chair on the beach for $25 per day. If you rent for an entire week you can save $35. What percent savings is the weekly discount?
20% discount
The players batting average went from 0.295 to 0.384. What is the percent change?
Increased by about 30%.
The shoes are normally $12, but on sale for buy one get one 50% off. Beach towels are normally $15, but are on sale 25% off. What is the total cost for two pairs of shoes and one towel with a 6.5% tax?
Two shoes = $18
Towel on sale = $11.25
Subtotal = $29.25
Tax = $1.90
Total = $31.15
After you deposit $550 into an account, you earned $132 after 6 years. What was the interest rate?
4%