Writing Ratios
Unit Rate
Ordered Pairs
Vocabulary
100
Mr. Ashland’s third period class has 13 boys and 15 girls in it.
Write the ratio of girls to boys in three different forms.
15 to 13
15:13
15/13
100
Mario bought 5 apples for $4.00.
What was the unit price per apple?
$0.80 per apple
100
(2,26)
(3,39)
(6,78)
(10,130)
(12,146)
100
What are the three ways to write a ratio?
__ to __
__:__
__ / __
200
A bag of candy contains 4 red pieces, 5 yellow pieces, 7 blue pieces, and 12 green pieces.
Write a ratio that compares the number of yellow pieces to total pieces of candy.
5:28
5/28
5 to 28
200
A car travels 180 miles in 3 hours.
What is the unit rate in miles per hour?
60 miles per hour
200
What is the ordered pair when there is 4 gallons of gas?
(4,140)
200
What is a ratio?
A comparison of two quantities by division.
300
The reptile room at a local zoo has 15 snakes, 6 turtles, and 12 lizards. Which of the following represent the ratio of turtles to total reptiles?
- 6 to 27
- 33 to 6
- 2 to 11
- 6 to 33
- 6 to 15
3. 2 to 11 or 4. 6 to 33
300
A pack of 8 granola bars costs $6.40.
What is the cost per granola bar?
$0.80 per granola bar
300
What are the four ordered pairs you see in this table?
(15,5)
(36,12)
(45,15)
(60,20)
300
What is a rate?
A rate is a ratio that compares two quantities measured in different units.
400
There are 27 cars on a highway and 8 are blue.
What is the ratio of blue cars to total cars? Write it in three different ways.
8:27
8/27
8 to 27
400
Mrs. Carbone bought a pack of 14 scissors for $30.10, what is the unit price per scissor?
$2.15 per scissor
400
What is the ordered pair for 1 lb?
(1,7)
400
What is a unit rate?
A rate in which the second quantity in the comparison is one unit.
500
A prize bucket contained 21 pencils, 35 pieces of candy, 10 pens, and 8 erasers. What is the ratio of pencils and pens to total prizes?
31 to 74
31:74
31/74
500
Lisa drove 156 miles in 3 hours. Donald drove 320 miles in 5 hours. Who drove at a faster speed? What was his/her speed?
Donald drove faster. He drove 64 miles an hour and Lisa drove 52 miles an hour.
500
Elizabeth walks at a constant rate. She walks 8 miles in 4 hours. What is the ordered pair that will represent the unit rate of miles per hour.
( 1 , 2 )
500
What is an ordered pair?
A pair of numbers that can be used to locate a point on a coordinate plane. It is written as (x, y).