Ratios/Proportions pt 1
Find n:
64/r=8/10
n=80
You can fit 21 towels on 3 shelves in a closet. How many towels can you fit on 1 shelf?
7 towels
Ariel takes a quiz in his math class. He gets 23/25 on the quiz. What is his grade as a percent?
92%
Write .32 as a fraction in simplest form.
8/25
Convert .43 to a percent.
43%
The ratios of boys to girls in the 8th grade is 5 to 4. There are 16 girls in the 8th grade. How many boys are there?
20 boys
Solve for m and check your work:
36/72=m/16
m=8
Write 44% as a fraction in simplest form.
11/25
Write
5/8
as a decimal.
.625
Write 2.5 as an improper fraction in simplest form.
5/2
If 6 erasers cost $2.40, how much does 1 eraser cost?
40 cents per eraser
Is
3/12=7/28
Explain your answer using 2 methods.
Yes, they are equal.
Methods that are ideal (Cross multiplication, Simplifying)
Convert the following percentages to a decimal:
a) 38%
b) 12.5%
c) .09%
a) .38
b) .125
c) .0009
Convert the following decimals to a percent:
a) .9
b) .0032
c) 207.1
a) 90%
b) .32%
c) 20710%
Write 408% as a mixed number in simplest form.
4 2/25
Apples from the market are bought at a price of 4 for $2.72. Find the unit rate, and use it to figure out how much 2 apples would cost.
The unit rate is $.68 per apple; 2 apples would cost $1.36.
Solve for p:
p/2.4=7.2/.8
m=21.6
There are 40 people in a movie theater. 21 of them are younger than thirteen years old while the rest are older than thirteen years old.
Find the percent of people who older than thirteen years old.
47.5%
Order the set from least to greatest.
.07, 49%, 6/25
.07, 6/25, 49%
Write 1.5% as a fraction in simplest form using only whole numbers.
3/200
Nathaniel delivers 3 pizzas in 15 minutes. At this rate, how many pizzas can he deliver in one and a half hours?
18 pizzas
If The Flash travels 49,700 miles in 60 minutes. How far would it travel in 1.5 hours?
74,550 miles
Rabbi Shimon ben Shetach lived over 2000 years ago and was well known for his honesty.
He had once bought a donkey for $200. Rabbi Shimon discovered that the donkey had a precious jewel around its neck worth $1,800. Realizing that the seller had no intention of selling the jewel with the donkey, Rabbi Shimon had his students return the jewel to the original owner of the donkey.
Compared to the donkey’s original value (without the jewel), how much more is the donkey with the jewel worth? Write your answer as a decimal and a percent.
10.00, or
1000%
Of the 150 boys in a middle school, 96 play soccer.
What percent of the boys play soccer?
What percent do not play soccer?
64% play soccer, 36% do not play soccer.
Write .35% as a fraction in simplest form using only whole numbers.
7/2000
FINAL JEOPARDY
What is
.01(115%)(frac{1}{10})
Remember, when numbers are in parenthesis next to each other, this means they are being multiplied.
.00115