Show:
% of a number
% proportions
% of change
tax/tip/discount/markup
sneak attack...could be anything!
100
What is 7% written as a decimal?
.07
100
What is the formula for problems that contain "is" and "of"?
is/of = %/100
100
What is the formula for percent of change?
amount of change/original amount
100
Your bill is $55.40 and you want to leave a %20 tip. How much should you leave as a tip?
$11.08
100
What is the formula to calculate simple interest, and what does each letter stand for?
I=PRT; I= interest, P= principle, R= rate, T = time
200
What is 11% of 8,000?
880
200
62 is what percent of 114? (Round to nearest whole percent.)
54%
200
You used to have $400. You now have $700. What is the percent of change? (Be sure to include increase or decrease.)
75% increase
200
A store stocks Superman socks for $2.45, but charge a 140% markup. How much will they charge you for the socks?
$5.88
200
Michael takes out a loan of $4,000 from the bank. The interest rate is 8% and he is able to pay the loan back in 7 years. How much money will he have to pay back in interest?
$1,280 interest
300
Jennifer has answered 76% of a 50 question test. How many problems has she answered?
38
300
82% of what number is 3? (Round to nearest tenth.)
3.7
300
You used to have 19 glow in the dark markers. You lost several and only have 2 left. What is the percent of change?(Round to the nearest tenth.)
89.4% decrease.
300
You go to Target and fill your cart with $208 worth of merchandise. You get to the register and discover you have a coupon that saves you 15%. What is your new total after the discount is applied?
$176.80
300
You place $25 in a savings account at the bank. The interest rate is 3%. How much money will you have in the account after 9 months?
$25.56
400
Meghan has answered 30% of a 200 question exam. How many problems does she still need to answer?
140
400
While shopping, Clara spent $30 on clothes. The money she spent was 40% of her savings. How much money was in her savings before she went shopping?
$75
400
You think there are 600 marbles in a jar. There are actually 535 marbles. What is your percent of error? (Round to nearest tenth.)
12.1% error
400
You go to Chili's for dinner with your family. The bill is $68.42 for dinner. Tax is 6%. Your family pays the bill and leaves a 21% cash tip on the table (calculated post tax.) How much did your family pay for dinner in total?
$68.42 + $4.11 tax + $15.23 tip = $87.76 for dinner
400
Triangle A is resized and redrawn as Triangle B. If the base of triangle A is 10 cm and the base of triangle B is 4 cm, what is the scale factor?
2/5
500
Give the best ESTIMATE for 24.8% of 60
15
500
Before Kellie went to the zoo, she had $500 in her bank account. She bought a stuffed giraffe that cost 28% of her money. She then bought some lunch for $22. How much money is still in her account?
$338
500
You used to have 16 monkey stuffed animals, but you gave 11 to your brother. What is your percent of change? (Round to nearest tenth, include increase or decrease.)
68.8% decrease
500
5 Below pays $0.24 for Justin Bieber posters. They mark up the price 350%. You decide you can't live without the poster so you bring one to the register. Tax is 7%. If you bring $1 to pay for the poster, will you have enough money? If so, how much will you have leftover? If not, how much will you still need?
Not enough money. You would still need $0.16.
500
On a map, 1 inch: 100 miles. What is the scale factor? (Hint: There are 5,280 feet in a mile and 12 inches in a foot.)
1/6,336,000