Ratios and Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a to b' or a:b.

Front

What is a proportion?

Back

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

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 cross-multiplication method?

Back

Cross-multiplication is a method used to solve proportions by multiplying the numerator of one ratio by the denominator of the other.

Front

Back

Front

What is the simplest form of the ratio 6:3?

Back

The simplest form is 2:1.

Front

How do you find the missing value in a proportion?

Back

Set up the proportion and use cross-multiplication to solve for the missing value.

Front

What is the ratio of red LEGOS to yellow LEGOS if there are 3 red and 6 yellow?

Back

The ratio is 1:2.

Front

Back

The value of y is 7.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second is the denominator.