6.06: Ratios and Proportions BW

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 solve a proportion using cross products?

Back

To solve a proportion, multiply the numerator of one ratio by the denominator of the other ratio and set them equal.

Front

What is the simplest form of a ratio?

Back

The simplest form of a ratio is when the two quantities are expressed in their lowest terms.

Front

If the ratio of two angles is 4:1, what is the measure of the smaller angle if they are supplementary?

Back

The smaller angle measures 36 degrees.

Front

How do you write a ratio of part to whole?

Back

To write a ratio of part to whole, divide the part by the total and simplify.

Front

What is the formula for finding an unknown in a proportion?

Back

Front

What is the total number of instruments if there are 40 trumpets, 39 clarinets, 24 violins, 51 flutes, and 16 trombones?

Back

The total number of instruments is 170.

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio to a fraction, write the first quantity as the numerator and the second as the denominator.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, and vice versa, as they both represent a comparison of quantities.