To put numbers in order, we can place them from lowest (first) to highest (last).
This is called ascending order. Think of ascending a mountain.
Here’s an example.
990, 330, 140, 20, 560
The smallest number is 20
The biggest number is 990
If we put the numbers in order from smallest to biggest, it will look like this:
20, 140, 330, 560, 990