Checkpoint: Finding Percents with Diagrams & Equiv. Ratios

Front

What is the formula to calculate a percentage?

Back

Percentage = (Part / Whole) * 100

Front

If 30% of 200 students participated in a competition, how do you find the number of participants?

Back

Multiply 200 by 0.30 (200 * 0.30 = 60).

Front

What does the term 'percent' mean?

Back

It means 'out of every one hundred.'

Front

How do you set up a proportion to find an unknown quantity using equivalent ratios?

Back

Set up the equation as (part/whole) = (part/whole) and solve for the unknown.

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different.

Front

How can you express 90% as a fraction?

Back

90% can be expressed as 90/100, which simplifies to 9/10.

Front

What is the relationship between fractions and percentages?

Back

Fractions can be converted to percentages by multiplying by 100.

Front

If a mixture consists of 1.5 parts white and 2 parts blue, how do you find the total parts?

Back

Add the parts together: 1.5 + 2 = 3.5 total parts.

Front

How do you calculate the percentage of successful attempts in a scenario?

Back

Divide the number of successful attempts by the total attempts and multiply by 100.

Front

What is the first step in solving a problem that involves finding a percentage?

Back

Identify the total amount (whole) and the part you are interested in.