Percents and Proportions Review

A percent is a ratio that compares a number to

• a fish

• a house

• a car

• 100

55% of the fish in my aquarium are clownfish. What is that percent as a fraction in simplest form?

• $\frac{22}{66}$
  

• $\frac{55}{100}$
  

• $\frac{5}{10}$
  

• $\frac{11}{20}$

This fish has eaten 4/5 of it's total food for the day. What is 4/5 as a percent?

• 45%

• 55%

• 80%

• 90%

My friend Arlo says that the 6 spots on this fish make up 95% of its whole body. Why is Arlo bonkers?

• Because I say no--and I'm always right!

• Because Arlo hasn't had anything to eat yet today.

• I don't know an Arlo.

• 95% is almost 100%, and clearly not all of this fish's body is covered by these 6 spots.

Tags

CCSS.3.G.A.2

Dory!! Everyone knows that Dory is, uh...challenged when it comes to remembering things. She can't remember how to change a decimal to a percent. Which of the following would you tell her to do?

• Multiply the decimal by 100, so 0.25 = 0.25 x 100 = 25%

• Move the decimal point 2 places to the right, so for 0.25, you start at the decimal point and go to the right once, Now it's between the 2 and the 5. Move it one more time to the right, and you get 25%

• Or, you could tell her to use either one of the methods above

Answer explanation

If you got the answer wrong, read this again. Move the decimal point 2 places to the right, so for 0.25, you start at the decimal point and go to the right once. Now it's between the 2 and the 5. Move it one more time to the right, and you get 25%

25% of the fish in this picture are in the top row. Is that true or false?

• True

• False

Proportions are 2 _______ that are _______. This fish couldn't care less what the answer is, but I do. Silly fish.

• sandwiches, wet

• ratios, unequal

• ratios, equivalent

• paintings, beautiful

Tags

CCSS.7.RP.A.2B

Solve this proportion.

 $\frac{x}{6}$  =  $\frac{4}{12}$  

• x = 2

• x = 3

• x = 4

• x = 5

Tags

CCSS.7.RP.A.2B

I count 8 bubbles coming out of this fish. Is 8 the solution to the proportion 4/5 = x/30?

• 24

• 16

• 12

• I'm sticking with 8

Tags

CCSS.7.RP.A.2C

The ratio of hearts to the total number of items in this picture is 3:4, right? There are 3 hearts and 4 total items. What is this as a percent?

• 45%

• 65%

• 75%

• 125%