Proportional or Not
Solve the Proportion
Set it up: % Proportions
Solve the % Proportion
???Mixed Questions???
100
4/2 and 20/6
NOT proportional
100
Brain Break: How many wheels does a tricycle have?
Answer: Three.
Fun Fact: The first pedal-powered tricycle was built in 1789.
100
1 is what percent of 5?
?/? = ?/100
1/5 = x/100
100
1 is what percent of 5?
x = 20
100
Solve:
10 /k = 8/ 4
k= 5
200
3/2 and 18/8
NOT proportional
200
10/k = 8/4
5
200
Brain Break: What are the primary colors?
Answer: Red, blue, and yellow.
Fun Fact: White is not really a color, it is the absence of color.
200
What percent of 8 is 6?
x = 75
200
Solve:
9 is 18% of what number?
x = 50
300
Brain Break: How many colors are in a rainbow?
Answer: Seven.
Fun Fact: The colors, in order from the top, are red, orange, yellow, green, blue, indigo, violet.
300
6/a = 3/8
16
300
What number is 25% of 40?
?/? = ?/100
x =10
300
Find 15% of 20.
x = 3
300
Set it up:
19 is what percent of 20?
19/20 = x/100
400
4/3 and 16/12
PROPORTIONAL
400
Brain Break: What fruit do raisins come from?
Answer: Grapes.
400
30 is 60% of what number?
?/? = ?/100
30/x = 60/100
400
What number is 25% of 40?
x = 10
400
Solve:
7/9 = a/5
a = 3.88
500
4/3 and 8/6
PROPORTIONAL
500
p/8 = 13/2
52
500
What percent of 8 is 6?
?/? = ?/100
6/8 = x/100
500
33 is 33% of what number?
x = 100
500
Brain Break: What is the hardest substance in your body?
Answer: Tooth enamel.
Fun Fact: A child has 20 teeth, and an adult has 32.
600
12/24 and 3/4
NOT proportional
600
v/12 = 10/2
60
600
Find 15% of 20.
?/? = ?/100
x/20 = 15/100
600
90 is 60% of what number?
x = 150
600
Set it up:
Find 55% of 120.
x/120 = 55/100
700
Brain Break: How many cents are in a quarter?
25
700
3/x = 7/10
4.28
700
15 is what percent of 150?
?/? = ?/100
15/150 = x/100
700
What number is 75% of 44?
x = 33
700
Proportional or Not?
12/7 and 36/21
PROPORTIONAL
800
6/9 and 2/3
PROPORTIONAL
800
2/x = 7/9
2.57
800
What number is 75% of 44?
?/? = ?/100
x/44 = 75/100
800
What percent of 60 is 42?
x = 70
800
Solve:
46 is what percent of 69?
x = 66.67