DEC 1 - Ratios,Rates, Percents Review

Ratios, Rates, and Percents

By Stephanie Escobedo

Open Ended

What are the 2 steps in calculating a percent of a number? For example, how would we calculate 82% of 120? Explain the steps.

Math Response

calculate 82% of 120

Type answer here

Correct Answer: 98.4

Deg^°

Rad

Multiple Choice

What strategy do we use to calcuate ratios? For example the ratio of boys to girls are the same in all classes. If a math class has a ratio of 8:10, how many boys are in gym class if there are 50 girls?

• Bat and Ball (cross multiply)

• Same sign add, different sign subtract

• TIBO

• SAS

Multiple Choice

The ratio of boys to girls are the same in all classes. If a math class has a ratio of 8:10, how many boys are in gym class if there are 50 girls?

• 20

• 40

• 45

• 30

Match

Best Buy buys Airpods from a warehouse for $100.00 then marks up the price by 25%, before selling them to customers. What steps can you take to calculate the new price of the airpods?

• Convert the percent to a decimal.

• Multiply the decimal by the original.

• ADD the product from the original

• $25.00

• $125.00

STEP 1

STEP 2

STEP 3

What is the mark up?

the new price

• STEP 1

• STEP 2

• STEP 3

• What is the mark up?

• the new price

Match

Air pods are 40% off! How can we calculate the sale price of the Airpods if they are normally $125.00

• Convert the percent to a decimal.

• Multiply the decimal by the original.

• Subtract the product from the original

• $75.00.

• $50.00.

Step 1

Step 2

Step 3

What is the sale price?

How much will I save?

• Step 1

• Step 2

• Step 3

• What is the sale price?

• How much will I save?