Ratios
What is a ratio?
A ratio compares two values
Simplify the ratio below to simplest terms:
15 : 9
5 : 3
Write an equivalent ratio for the ratio below:
8 : 16
1 : 2
What is a bar model?
A pictorial representation of numbers in the form of bars.
What is Unit Rate?
A comparison of two measurements in which one of the terms has a value of 1.
It compares the amount to its unit of measure.
The order you write a ratio makes a difference
True or False
True
Simplify the ratio below to simplest terms:
8 : 36 : 72
2 : 1 : 2
List TWO equivalent ratios for the ratio below:
9 : 23
18 : 46
27 : 69
In Ms. Sall’s class, the ratio of people with blue eyes to people with brown eyes is 8 : 6. If there are 56 students in the class, how many students have blue eyes?
8 plus 6 = 14 divided 56 = 4
4 in each box
8 x 4 = 32
32 students have blue eyes
Find the unit rate by simplifying the fraction to lowest terms:
Henry buys 4 grapes for $36.00
Unit Rate: $9.00 per unit
What are the three different ways to write a ratio?
Identify all of the different symbols and signs.
1. 8:2
2. 8 to 2
3. 8/2 (fraction)
Simplify the ratio below to simplest terms:
87: 29 : 120
Cannot be simplified!
List FOUR equivalent ratios for the ratio below:
8 : 12
16 : 24
24 : 36
32 : 48
40 : 60
Ms. Sall's favorite candy is Reeses. The ratio of fun size Reeses to regular size Reeses is 7 : 8. If Ms. Sall has 91 fun size Reeses, how many more regular size Reeses does she have than fun size Reeses?
fun size= 91
regular= 104
104-91= 13
13 more regular size
Compare these two by finding the unit rate. Use <, > and = sign to compare them.
84 miles in 7 hours vs 54 miles in 6 hours
(12) (9)
84 miles in 7 hours > 54 miles in 6 hours