Ratios, Proportions & Conversions

Front

What is a ratio?

Back

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

Front

How do you convert square feet to square yards?

Back

To convert square feet to square yards, divide the number of square feet by 9, since 1 square yard equals 9 square feet.

Front

What is a proportion?

Back

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

Front

How do you find the scale factor in a scale drawing?

Back

The scale factor is found by comparing the dimensions of the drawing to the actual dimensions. For example, if 1 inch represents 10 feet, the scale factor is 1:120.

Front

What is the formula for calculating the cost per person?

Back

Cost per person = Total cost / Number of people.

Front

How do you calculate the reading rate in words per minute?

Back

To find the reading rate, divide the total number of words read by the total time in minutes.

Front

What is the relationship between ounces and grams?

Back

1 ounce is approximately equal to 28.35 grams.

Front

How do you express a ratio in simplest form?

Back

To express a ratio in simplest form, divide both terms of the ratio by their greatest common divisor.

Front

What is the difference between a unit rate and a ratio?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, while a ratio compares two quantities regardless of their units.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide to find the unknown value.