Ratios and Equivalent Ratios

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they can be simplified to the same fraction.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is the ratio of red apples to green apples if there are 5 red apples and 3 green apples?

Back

5:3

Front

If the ratio of green marbles to yellow marbles is 3:1, how many yellow marbles are there if there are 9 green marbles?

Back

There are 3 yellow marbles.

Front

How do you find a missing value in a ratio?

Back

You can find a missing value in a ratio by setting up a proportion and cross-multiplying to solve for the unknown.

Front

What is the ratio of soccer balls to students if there are 8 soccer balls for every 12 students?

Back

The ratio is 8:12, which simplifies to 2:3.

Front

If Kaylei buys 3 apps for $9, what is the cost per app?

Back

The cost per app is $3.

Front

How much would Kaylei pay for 7 apps if each app costs $3?

Back

Kaylei would pay $21 for 7 apps.

Front

What is the equivalent ratio of 3:7 when both terms are multiplied by 4?

Back

The equivalent ratio is 12:28.