Conversions
What is 3/10 as a decimal?
.3
Write 10/7 as a mixed number.
1 3/7
Write an equation: 30% increase
y=1.30x
The price of paper towels in $9.00. Sales tax is $.53. What is the tax rate?
5.9%
What is the formula to calculate percent error?
|Measured Value−True Value∣ ----------------- True value ×100
Write .78 as a fraction.
78/100
What is 5 3/4 as an improper fraction?
23/4
Write an equation: 83% decrease
y=.17x
Your bill is $32. What is the price after a 15% tip.
$36.80
A student measures the mass of a rock to be 45 grams, but the true mass is 50 grams. What is the percent error?
10%
Write .0931 as a percent.
9.31%
Solve: 1/2 x 3/4
3/8
TAYLOR SWIFT SOLD 215 RECORDS ON BLACK FRIDAY LAST YEAR. THIS YEAR, RECORDS SALES INCREASED BY 40%.
HOW MANY RECORDS DID TAYLOR SELL THIS YEAR?
301
A car is $8,350. It gets marked up 17.4%. What is the retail price of the car?
$9802.9
A thermometer reads 102°C, but the true temperature is 100°C. What is the percent error in this measurement?
2%
What is 4/1000 as a decimal?
0.004
Solve: 2/3 divided by 5/8
16/15
JAMES WENT TO THE STORE AND BOUGHT A PAIR OF SHOES FOR 14% OFF. THE ORIGINAL PRICE OF THE SHOES WAS $64.50.
WHAT WAS THE SALE PRICE OF THE SHOES?
55.47
Last week Bill sold $650 worth of sweatshirts. Bill earn 3.4% commission. What is bills commission?
$22.10
A student calculates the perimeter of a square to be 40 cm, but the true perimeter is 42 cm. What is the percent error in the student's measurement?
4.76%
Convert 39.35% to a fraction.
3935/10000
A cyclist rode 3 3/4 miles in 3/10 hour. How fast was she going in miles per hour?
12 1/2 miles per hour
JUSTIN JEFFERSON MADE 5 TOUCHDOWNS LAST YEAR. THIS YEAR HE HAS MADE 8.
WHAT IS THE PERCENT INCREASE?
60%
You invest $400 in a savings account that pays 5% simple interest per year. How much interest will you earn after 1 year?
$20.00
A student measures the height of a plant to be 30 cm, but the actual height is 32 cm. If the student takes another measurement and gets 31 cm, what is the percent error in the first measurement and the second measurement?
6.25% and 3.13%