8.09 Order and compare volume
Are you ready?
Remembering how to order numbers can help us in this lesson. Let's try this problem to practice.
Examples
Example 1
Order these numbers from smallest to largest.
516, \, 156, \, 561
We can put numbers in order using a place value table and comparing the digits from the highest place value.
Order and compare volumes with unit cubes
Let's see how we can use unit cubes to compare the volumes of different 3D shapes.
Examples
Example 2
We want to compare the volumes of the following block stacks.
Which block stack has the smaller volume?
Volume means how much space our shape takes up. We can compare volumes by comparing the number of blocks of space the objects take up.
Compare volume by numbers
In this video, we see how we can compare the numbers, to work out the largest volume, as long as our shapes are using the same unit of measurement.
Examples
Example 3
Select the correct symbol to compare the following two numbers:
95 \text{cm}^3 ⬚ 98 \text{cm}^3
If we have shapes with the same unit of measurement, we can compare the numbers, to work out the largest volume.