What is the ratio of A to B if A is 4 and B is 12?
4/12 = 1/3
100
A student answered 86 problems on a test correctly and got a 98%. How many problems were on the test (assume all problems counted the same amount and round to the nearest whole number)?
86 questions is 98%
86 = .98?
Divide 86 by .98
? = 87.7551
? = 88 questions
100
What percent is 7 of 14?
Divide 7 by 14 and move the decimal.
50%
100
Your bill is $10 and you want to leave the waitress a 15% tip. What will your tip be?
Multiply 10 by .15.
$1.50
100
Find 144 divided by 12.
12
200
Figure out what number should replace the ?:
3/4 = ?/48.
4 x 12 is 48, so 3 x 12 is 36.
? = 36
200
At a sale, shirts were sold for $15 each. This price was 80% of the original price. What was the original price?
15 dollars is 80% of some price.
15 = .80?
Divide 15 by .80
The original price was $18.75.
200
What is .678 as a percent?
67.8%
200
Your bill is $18 and you want to leave a 20% tip, but you only have %21 in your wallet. Do you have enough money?
Find 20% of 18. Multiply 18 by .20 = 3.60. To see if you have enough, add the tip to 18.
$18 + $3.60 = $21.60.
You do not have enough money.
200
What is 123 into 45678? Round to four decimal places.
371.3659
300
If the ratio of boys to girls in a class is 4/5, and there are 20 girls, how many boys are there?
4/5 = ?/20, and 5 x 4 = 20, so 4 x 4 = 16.
The answer is 16 boys.
300
There are 36 carpenters in a crew. On a certain day, 29 were present. What percent were present (round to the ten thousandths place)?
Turn 29/36 into a percent.
Divide and get .80555555555555 (repeating)
Move the decimal right two spaces: 80.55555%
Round: 80.55556%
300
What is the decimal form of 9/10?
.9
300
Frank made a 15% tip on a $22 bill and a 25% tip on a $75 bill. How much money did he make?
Multiply 22 x .15 and add it to 75 x .25
3.30 + 18.75 = $22.05
300
What is 87601 divided by 45? Round to four decimal places.
1946.6889
400
Are these two ratios equal?
5/6 and 7/12
Use cross multiplication. 6 x 7 = 42, and 5 x 12 = 60.
They are not equal.
400
A woman put $580 into a savings account for one year. The
rate of interest on the account was 6½%. How much was the
interest for the year in dollars and cents? (Round to the
nearest cent)
Find 6.5% of $580.
Move the decimal and multiply: 580 x .065 = 37.7
She made $37.70
400
What is the decimal form of 9/12?
Divide 9 by 12: .75
400
Alisha and her two friends went out to lunch and split the $21.75 bill evenly. They want to leave a 20% tip. How much does Alisha owe?
Find 20% of $21.75 by multiplying .2 x 21.75 = 4.35.
Add this tip amount to the bill: $21.75 + $4.35 = $26.10.
Divide by 26.10 by 3: $8.70
Alisha owes $8.70.
400
What is 3 divided by 4?
.75
500
What is ratio of A to B if A=7 and B=14?
7/14 = 1/2
500
The Royals softball team played 75 games and won 55 of
them. What percent of the games did they lose? (round to
the nearest tenth)
Subtract to find the number that they lost: 75 - 55 = 20
Find the percent: 20/75 = .26666 (repeating)
Move the decimal and round: 26.7%
500
Change .6 into a fraction.
3/5
500
What is the cost of meal with a 20% tip if the meal costs $8.75 and the sales tax rate is 6%? Round to the nearest cent.
Find the tip: .20 x 8.75 = 1.75
Find the sales tax: .06 x 8.75 = .525
Add: 8.75 + 1.75 + .525 = 11.025
Round to the nearest cent: $11.03