Ratios/Proportions/Percent Practice

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

Ratios 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 is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

Front

What does it mean to find a percentage of a number?

Back

Finding a percentage of a number means calculating how much that percentage represents in terms of the whole number.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100.

Front

What is the formula to find the percentage of a number?

Back

The formula is: Percentage = (Part/Whole) x 100.

Front

If 12 loaves of wheat bread and 7 loaves of rye bread are present, what is the ratio of wheat to rye?

Back

The ratio of wheat to rye is 12:7.

Front

If a pizza has 8 slices and costs $12, what is the cost per slice?

Back

The cost per slice is $1.50.

Front

What is the relationship described by the ratio 2:5?

Back

The ratio 2:5 can describe the relationship of girls to boys if there are 2 girls and 5 boys.