Percent Problems

Quiz coming up on finding the percent of a number and other percent problems (ex. tax, tip, etc.) How prepared are you for the quiz?

• 4 - Very well-prepared

• 3 - Pretty well-prepared

• 2 - Mostly prepared

• 1 - Not yet prepared

Tags

CCSS.6.RP.A.3C

Which of the following does NOT belong?

• 316%

• 3.16

• $3\ \frac{16}{100}$

• 0.316

Answer explanation

0.316 = 31.6%
Not 316%
All other values represent equal values.

In a recent survey, 42% of people said they preferred pet dogs to pet cats. What fraction do NOT prefer pet dogs?

• $\frac{42}{100}$

• $\frac{29}{50}$

• 58%

• 0.42

Answer explanation

Since 42% perfer pet dogs, 58% (100 - 42 = 58) do NOT prefer pet dogs. 58% = 58/100 as a fraction. This can be simplified to 29/50.

There are a total of 50 erasers to be split among two classes. For every 3 students in one class, there are 2 students in the other class. Divide the erasers into two groups for each class. How many erasers should each class get?

• 30 for one class; 20 for the other class

• 25 for one class; 25 for the other class

• 50 for one class; 50 for the other class

• 26 for one class; 24 for the other class

Answer explanation

This answer represents an equivalent ratio of 3 to 2, and a total of 50 erasers.

What is 20% of 80?

Answer explanation

16 is 20% of 80
0.20 x 80 = 16

$\frac{20}{100}=\frac{2}{10\ }=\frac{16}{80}$
10% of 80 is 8; So 20% of 80 is 16

Tags

CCSS.6.RP.A.3C

Skyler knocked down 40% of the bottles at a carnival game. If there were 70 bottles to start, how many bottles did Skyler knock down?

Answer explanation

28 is 40% of 70
0.40 x 70 = 28

$\frac{40}{100}=\frac{4}{10}=\frac{28}{70}$
10% of 70 is 7; So 40% of 70 is 28

Tags

CCSS.6.RP.A.3C

Tip is added to the total amount paid for a service provided (i.e. waiters, hair stylist, nail salon, etc.). This is...

• always true

• sometimes true

• never true

Tags

CCSS.5.NBT.B.7

An adult hair cut costs $40 at a hair salon. If the customer leaves a 20% tip, determine the total amount paid.

Answer explanation

20% of $40
0.20 x 40 = 8

$\frac{20}{100}=\frac{2}{10}=\frac{8}{40}$
10% of $40 is $4; So 20% of $40 is $8

Cost of service + Tip = Total Cost
40 + 8 = 48

Tags

CCSS.6.RP.A.3C

0% of any number is 0. This is....

• always true

• sometimes true

• never true

Ask Me Anything about finding the percent of a number or percent problems.