Benchmark Percentages

Match the following

• 50%

• 
• 60%

• 
• 75%

• 
• 10%

• 

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What operation does the word "of" imply?

"What is 50% of 20?"

• addition

• subtraction

• multiplication

• division

Tags

CCSS.6.RP.A.3C

• How far is 50% of a 2,000-kilometer trip?

• 50%

• 1,000 km

• 4,000 km

• 2,000 km

How much is 10% of 20 liters of milk?

Tags

CCSS.6.RP.A.3C

How long is 75% of a 24 hour day?

Share your answer in hours.

Benchmark percentages are percentages that are easy to think about in terms of ​ (a)   . Benchmark percentages include 1/2 or​ (b)   1/10 or (c)   1/4 or ​ (d)   and 3/4 or ​ (e)  

• fractions
• 50%
• 10%
• 37%
• 25%
• 75%
• 82%

Match the following

• 18

• What is 10% of 230?

• 21

• What is 25% of 88?

• 10.5

• What is 50% of 42?

• 23

• What is 50% of 21?

• 22

• What is 75% of 24?

Tags

CCSS.6.RP.A.3C

Organize these options into the right categories

Groups:

(a) 50%

,

(b) 75%

,

(c) 10%

• 12 hours of a 24-hour day

• 5 liters out of 10 liters of milk

• 18 hours of a 24-hour day

• 200 km of a 2,000 km trip

• 1 liter out of 10 liters of milk

• 1,500 km of a 2,000 km trip

Tags

CCSS.6.RP.A.3A

Sometimes you will see benchmark percentage problems where you are given a part instead of a whole.

For example, "Nine is 50% of what number?" is asking for the whole of which nine is a part.

To find the answer, you can multiply nine by ​ (a)   to get 18 because 50% of any quantity is 1/2 of that quantity.

• two
• three
• ten

Tags

CCSS.6.RP.A.3C

9 is 25% of what number?

• 18

• 2.25

• 36

• 45

Tags

CCSS.6.RP.A.3C