6th Grade Honors 4.1 Writing and solving proportions key.notebook
6th Grade Honors: How do we write and solve proportions?
November 30, 2016
How do we solve proportions?
A proportion is an equation that states two ratios are equivalent.
Warm-up:
Find the unit rate:
1. 780 copies in 15 minutes 2. 24 bottles in 8 minutes
To solve a proportion:
1. Simplify your original ratio
2. Multiply or divide by 1 to find a new ratio
3. 1/2 miles in 1/4 hour 4. 2/3 cups water for each 2/5 c. sugar
Nov 26­9:57 PM
Ex 1:
Ex 3:
Ex 2:
Nov 26­9:59 PM
Ex 5: Mr. Thomas' class has 3 girls for every 4 boys. If his class has 16 boys, how many girls does it have?
Ex 4:
Nov 26­10:00 PM
Nov 26­10:01 PM
1
6th Grade Honors 4.1 Writing and solving proportions key.notebook
November 30, 2016
Ex 6: A machine makes toy cars at the rate of 120 cars per hour. How many toy cars will it make in 8 minutes?
Nov 26­10:01 PM
Nov 26­10:01 PM
2

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