Ratios
There are 12 fifth graders and 15 sixth graders in a dance class. What is the ratio of sixth graders to fifth graders.
15:12
Sarah can wash 45 cars in 15 hours. How many cars can she wash in 5 hours?
15 cars
Four pairs of shoes cost $48. How much does one pair of shoes cost?
$12
2/3 divided by 1/4
8/3 or 2 2/3
What is 30% of 30?
9
6.5 + 3.49 =
9.99
When 2 fractions or ratios are eual to each other, they are what?
Equivalent
There are 22 kids in a class. There are 11 boys and the rest girls. What is the ratio of the number of boys to the total number of kids? Also, what is it simplified?
11:22 1:2
Luke can make 10 tables in 2 hours, how many tables can he make in 1 hour?
5 tables
Bronson rode his bike 32 miles in 4 hours. How many miles can he ride in 1 hour?
8 miles
How many 1/3 are in 3 1/3?
10
What is 60% of 45?
27
7.856 + 9.79
17.646
When you find something "per one" it is called____
unit rate
There are 56 beads in a container. 34 of them are pink and the rest are yellow. What is the ratio of the number of pink beads to yellow beads? What is it simplified?
34:22 17:11
5 pairs of shoes cost $40. How much do 20 pairs of shoes cost?
$160
Lauren can type 96 words in 8 minutes. How many words can she type per minute?
12 words
Mike uses 4/5 of a bag of chocolate chips to bake 8 muffins. What fraction of the bag is used for each muffin?
4/5 divided by 8 = 4/40 or 1/10
16 out 20 students have done their homework. What percent of students have completed their homework?
80%
8.3 - 5.45=
2.85
Percents are out of what number?
100
Sally is making cookies for a bake sale. She needs to make 32 cookies total. 24 of them will be sugar cookies and the rest will be chocolate chip. What is the ratio of chocolate chip cookies to total cookies? What is the simplified ratio?
8:32 1:4
Mrs. Davis can type 132 words in 6 minutes. How many words can she type in 9 minutes?
198 words
A pack of 6 batteries cost $7.62. What is the cost per battery?
$1.27
Sam shares 2/6 of his cards with 4 friends. What fraction of the cards does each friend recieve?
2/6 divided by 4 = 2/24 or 1/12
80% of 80 is what?
64
9.12 - 3.4 =
5.72
An example of an expression is:
2 + 3
5-4
9 x 2
18 divided by 3
The Davis family is having a cookout. They will be making 27 hotdogs and 36 cheeseburgers. What is the ratio of the total number of hotdogs and cheeseburgers to cheeseburgers? What is it simplified?
63:36 21: 12 7:4
Mrs. Diamond's family spent $30 on 3 movie tickets. If they wanted to buy tickets for everyone in the family. How much would it cost to buy 11 tickets?
$110
Sammy babysat for 3 hours each night for 5 nights. She made a total of $135. How much did she make per hour for babysitting?
$9
A baker is making croissants. He has 18 pounds of dough. Each croissant is made from 1/8 pounds of dough. How many croissants can he make?
18 divided by 1/8 = 144
What is 35% of 90
31.5
1 - 0.356 =
0.644
An unknown number is called
a variable