Ratio

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

How do you write a ratio?

Back

A ratio can be written in three ways: using a colon (e.g., 3:4), as a fraction (e.g., 3/4), or with the word 'to' (e.g., 3 to 4).

Front

What does it mean to simplify a ratio?

Back

Simplifying a ratio means reducing it to its simplest form by dividing both terms by their greatest common divisor.

Front

What is an equivalent ratio?

Back

Equivalent ratios are ratios that express the same relationship between two quantities, even if the numbers are different (e.g., 2:3 is equivalent to 4:6).

Front

If the ratio of red apples to green apples is 4:3, how many apples are there in total if there are 12 red apples?

Back

If there are 12 red apples, then there are 9 green apples (4:3 ratio). Total apples = 12 + 9 = 21.

Front

What is the ratio of boys to girls if there are 15 boys and 20 girls?

Back

The ratio of boys to girls is 15:20, which simplifies to 3:4.

Front

How do you find a missing number in a ratio?

Back

To find a missing number in a ratio, set up a proportion and cross-multiply to solve for the unknown.

Front

What is the ratio of triangles to circles if there are 9 triangles and 6 circles?

Back

The ratio of triangles to circles is 9:6, which simplifies to 3:2.

Front

If the ratio of two numbers is 5:2 and the first number is 25, what is the second number?

Back

If the first number is 25, the second number is 10 (5:2 ratio).

Front

What is a part-to-part ratio?

Back

A part-to-part ratio compares different parts of a whole, such as the ratio of boys to girls in a class.