Finding the Part
25% of 16 is ______.
*Set up as a proportion or equation
What is 4?
Proportion: 25/100 = x/16
Equation: (0.25)(16) = x
20% of ______ is 10.
*set up as a proportion or equation
What is 50?
Proportion: 20/100 = 10/x
Equation: 0.2*x = 10
12 out of 24 is ____%.
*set up as a proportion or equation
What is 50%?
Proportion: 12/24 = x/100
Equation: (think __% of 24 is 12) --> x(24) = 12
.... then convert x to a %
65% of students do not study prior to tests :( If there are a total of 700 students, how many do not study for tests?
What is 455 students?
Proportion: 65/100 = x/700
The ratio of red to black squares is 2:3. How many red squares are there if there are 27 black squares?
What is 18 red squares?
2/3 = x/27
72% of 12 is _________.
*Set up as a proportion or equation
What is 9?
Proportion: 72/100 = x/12
Equation: (0.72)(12) = x
15 is 10% of ________.
*set up as a proportion or equation
What is 150?
Proportion: 15/x = 10/100
Equation: 15 = 0.1*x
49 out of 50 is _____%.
*set up as a proportion or equation
What is 98%?
Proportion: 49/50 = x/100
Equation: (think __% of 50 is 49)... x(50) = 49
... then convert x to a %
16 out of 20 people surveyed use debit cards instead of checks. What percent do NOT like to use debit cards?
What is 20%?
Proportion: 4/20 = x/100
Equation: (think __% of 20 people who don't like debit is 4) .... x(20) = 4 --> convert to %
The ratio of zebras to lions at the zoo is 8:7. If there are 56 lions, how many total zebras and lions are there?
What is 120 zebras and lions?
7/15 = 56/x
120% of 17 is ________.
*Set up as a proportion or equation
What is 20.4?
Proportion: 120/100 = x/17
Equation: (1.2)(17) = x
12 is 100% of ______.
12
19 is _____% of 95.
*set up as a proportion or equation
What is 20?
Proportion: 19/95 = x/100
Equation: 19 = x(95) --> convert x to a %
There are 35 students who left early for a track meet today. This is about 5% of the total enrollment in the school. How many total kids are in the school?
What is 700 students?
Proportion: 35/x = 5/100
Equation: x(0.05) = 35
The ratio of brownies to cupcakes at a bake sale is 4:5. If there are a total of 144 baked goods at the sale, how many cupcakes are there?
What is 80 cupcakes?
5/9 = x/ 144
_____ is 40% of 25.
*Set up as a proportion or equation
What is 10?
Proportion: x/25 = 40/100
Equation: x = (0.4)(25)
40 is 125% of ________.
*set up as a proportion or equation
What is 32?
Proportion: 40/x = 125/100
Equation: 40 = 1.25*x
18 is _____% of 54.
*set up as a proportion or equation
What is 33 1/3%
Proportion: 18/54 = x/100
Equation: 18 = x(54) --> convert x to a %
75% of students got an A on the quiz. How many students did NOT get an A if 124 students took it?
What is 31 students did not get an A?
25/100 = x/100
Equation: (.25)(124) = x
3 out of 11 students love social studies. The rest love math <3. If the team has 143 students, how many students love math?
What is 104 students love math?
8/11 = x/143
Your school's newspaper budget is 160% of last year's. Last year's total budget was $2125. This year's budget is __________.
*Set up as a proportion or equation
What is $3,400.
Proportion: 160/100 = x/2125
Equation: x = 1.6*2125
75% of ________ is 15.
*set up as a proportion or equation
What is 20?
Proportion: 75/100 = 15/x
Equation: .75*x = 15
____% of 25 is 18.75.
*set up as a proportion or equation
What is 75%?
Proportion: x/100 = 18.75/25
Equation: x(25) = 18.75 --> convert x to a %
8 students have just cats and 14 have only dogs. If 60% do not have pets, how many students are there in the class?
What is 55 students are in the class?
22/x = 40/100
.4x = 22
Magic Paint uses a ratio of yellow to blue to red. The ounces of each are 1:2:3. If there are a total of 72 ounces of Magic Paint altogether, how many ounces of blue are needed?
What % of Magic Paint is blue?... yellow?....red?
What is 24 ounces of blue?
2/6 = x/72
2/6 = x/100 = blue --> 33 1/3 % is blue
1/6 = x/100 = yellow --> 16 2/3% is yellow
3/6 = x/100 = red --> 50% is red