Unit 3 Review

Unit 3 Review

Let's take a walk through memory lane

Multiple Choice

Percent is always out of

• 10

• 100

• 1000

• 10,000

Multiple Choice

In a bag of skittles there are 24 candies. 6 red, 5 yellow, 4 green, 9 purple. What percentage of the candies are red?

• 25%

• 20%

• 16.67%

• 75%

How do we find percentages?

Let's look back at what we've learned

Percentages are a part of a whole, so we must know the whole amount first, then we turn to division. Your answer will come out to be a decimal. Once you have completed the decimal you will move the decimal 2 places to the right (multiply by 100).

Boom done put a percent sign and it's complete.

Multiple Choice

In a bag of skittles there are 24 candies. 6 red, 5 yellow, 4 green, 9 purple. What percentage of the candies are NOT red?

• 25%

• 20%

• 16.67%

• 75%

Multiple Choice

A jet plane can carry up to 200,000 liters of fuel. It used 130,000 liters of fuel during a flight.

What percentage of the fuel capacity did it use on this flight?

• 60%

• 65%

• 55%

• 0.65%

Fill in the Blanks

Rates are a unique type of ratio where the relationship remains constant.

Like if one class had 4:5 girls to boys than the entire school would have 4 girls to every 5 bous.

What are rates?

Multiple Choice

It took 4 hours to drive 240 miles. At this rate, how long does it take to drive 90 miles?

• 60 hours

• 6 hours

• $$2\frac{2}{3}$$ hours

• $$1\frac{1}{2}$$ hours

Fill in the Blanks

Multiple Choice

Which weighs more: a pumpkin that weighs 3.8 kilograms, or a cat that weighs 9

pounds? Note: 1 pound is about 0.45 kilograms.

• Pumpkin

• Cat

Put your percent over 100 and reduce.

Fractions

Going from percent to decimal you move the decimal 2 places to the left (divide by 100).

Decimals

How to convert percents?

Fill in the Blanks

Match

Match the following

• 1/10

• 1/4

• 1/3

• 2/3

• 3/4

10%

25%

33 1/3%

66 2/3%

75%

• 10%

• 25%

• 33 1/3%

• 66 2/3%

• 75%

First convert percent into decimal. Then multiply the decimal to the whole number.

Boom done

​

How to determine a percent of a number?

Multiple Choice

How long is 50% of 60 minutes?

• 30

• 20

• 15

• 180

Multiple Choice

Today, you have a 20% off of the price coupon for Best Buy. If you buy an XBox game that costs $65.00, how much money will you be saving by using your coupon?

• $13.00

• $15.00

• $7.00

• $42.00

Multiple Choice

What is 65% of 80?

• 52

• 123

• 50

• 48

Multiple Choice

It takes Jada 20 minutes to walk to school. It takes Andre 80% as long to walk to school. How long does it take Andre to walk to school?

• 16 minutes

• 14 minutes

• 18 minutes

• 4 minutes

Multiple Choice

There is a jar of jellybeans on Ms. Kane's desk. 40% of the jellybeans are red. If there are 55 jelly beans in the jar, how many are red??

• 20

• 22

• 24

• 25

How do you go back to the original number?

First find the percent you are looking for and convert it to a decimal. Then divide the part by the decimal. Once you have completed your division you are all done back to the whole amount.

Boom Done Like a Boss.

Multiple Choice

Scott’s family has completed 60% of their road trip. They have traveled 72 miles. How many miles is the trip?

• 24

• 120

• 96

• 160

Multiple Choice

Eric earned 60 points on his last test. If he received 80%, what was the max points on the test?

• 75

• 80

• 100

• 60