Proportions - Scaling Up and Scaling Down

Front

What is a proportion?

Back

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

Front

How do you scale up a ratio?

Back

To scale up a ratio, multiply both terms of the ratio by the same positive number.

Front

How do you scale down a ratio?

Back

To scale down a ratio, divide both terms of the ratio by the same positive number.

Front

If 40 apples fit into 3 baskets, how many apples fit into 12 baskets?

Back

160 apples

Front

What is the ratio of teachers to students if there are 2 teachers for every 26 students?

Back

The ratio is 2:26 or simplified to 1:13.

Front

If there are 8 teachers in the science department, how many students are there if the ratio is 2 teachers to 26 students?

Back

104 students.

Front

How many pints are in 56 ounces if there are 112 ounces in 7 pints?

Back

3.5 pints.

Front

If 9 truckloads can ship 1200 boxes, how many boxes can 3 truckloads ship?

Back

400 boxes.

Front

What is the unit rate of pencils per box if there are 18 pencils in a box?

Back

18 pencils per box.

Front

How many boxes are needed for 108 pencils if each box contains 18 pencils?

Back

6 boxes.