Comparing and scaling

Front

What is the formula to calculate the percentage of a part compared to the whole?

Back

Percentage = (Part / Whole) x 100

Front

If a recipe calls for 4 cups of concentrate and 5 cups of water, what is the total amount of liquid?

Back

Total liquid = 4 cups + 5 cups = 9 cups

Tags

CCSS.4.MD.A.2

Front

What is a part to whole ratio?

Back

A part to whole ratio compares a part of a quantity to the entire quantity.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you solve a proportion?

Back

Cross-multiply and divide to find the unknown value.

Tags

CCSS.7.RP.A.2C

Front

If 20 tickets cost $16.00, what is the cost of one ticket?

Back

Cost of one ticket = $16.00 / 20 = $0.80

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How many tickets can you buy for $50 if one ticket costs $0.80?

Back

Number of tickets = $50 / $0.80 = 62.5, so you can buy 62 tickets.

Tags

CCSS.7.EE.B.3

Front

What is the definition of a ratio?

Back

A ratio is a comparison of two quantities by division.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the difference between a part to part ratio and a part to whole ratio?

Back

A part to part ratio compares two parts of a whole, while a part to whole ratio compares one part to the entire whole.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a survey shows that 30 out of 120 players prefer water, what percent prefer water?

Back

Percentage = (30 / 120) x 100 = 25%.

Front

What is the first step in solving a word problem involving ratios?

Back

Identify the quantities involved and what is being asked.