Ratios
Ratio Tables
Unit Rates and rates
Better Buy
Double Number Lines
100
Write the ratio.
6:4
100
Find the missing part of the ratio.
9
100
Find the unit rate.
6 kittens in 3 boxes.
2 kittens per box.
100
Which is the better buy?
A. 4 pens for $2.
B. 12 pens for $9.
4/2= $2 for 1 pen
12/9= $3 for 1 pen
OPTION B is the better buy.
100
TRIVIA
How many planets are in our solar system?
8
200
Write the ratio.
2:6
200
Find the miss parts of each ratio.
8 and 9
4:3, 8:6, 12: 9
200
find the unit rate.
18 necklaces made in 3 hours.
6 necklaces per hour.
200
Which is the better buy?
A. $2.64 for 6 ounces of toothpaste
B. $3.60 for 8 ounces of toothpaste
A. $.44 per ounce
B. $.45 per ounce
OPTION A is your better buy
200
Write a rate that represents the situation.
ex. 1 inch every 3 years
300
Find the smallest version of this ratio.
24 pencils: 10 pens
12 pencils: 5 pens
300
Find the missing parts of the ratios.
8 and 40.
5:4, 10: 8, 40 : 32
300
Find the unit rate.
$12.50 for 5 ounces.
$2.50 per ounce.
300
Which is the better buy?
A. $3.75 for 3 apples
B. $4.50 for 5 apples
A. $1.25 per apple
B. $.90 per apple
OPTION B IS THE BETTER BUY!
300
Write a rate that represents the situation.
ex. 19 students for every 8 computers.
400
During a checkers game, there are 16 pieces left. The ratio of black to red is 3:5. How many black pieces are on the board?
Explain how you found your answer.
6 black game pieces
400
Find the missing values in the ratio table.
4 and 20
10: 8, 5:4, 20:16
400
Your neighbor pays you $17 for every 2 hours you work. You work 8 hours on Saturday. How much does your neighbor pay you?
$68 dollars. ($8.50 per hour)
400
TRIVIA
What video game features a blue hedgehog collecting rings?
Sonic the Hedgehog
400
TRIVIA/RIDDLE
What has keys but can't open locks?
A piano
500
There are 48 students in school play. The ratio of boys to girls is 5:7. How many more girls than boys are in the play? Explain how you found your answer.
8 more girls
This answer was found by dividing 48 by 12 and then multiplying both 5 and 7 by 4. I subtracted 28 and 20 to get 8 more girls.
500
Find the missing values in the ratio table.
3 and 48
12:16, 3:4, 36:48
500
Are these rates equivalent?
35 heartbeats in 25 minutes
14 heartbeats in 10 minutes
1.4 = 1.4
Yes, they are the same.
500
Which car gets the better gas mileage?
A. 180 miles using 6 gallons of gas.
B. 175 miles using 7 gallons of gas.
A. 30 miles per gallon
B. 25 miles per gallon
OPTION A gets better gas mileage per gallon.
500
TRIVIA/RIDDLE
What can you catch but not throw?
A cold