Learning numbers in sign language is just as important as words and letters.
The below image represents numbers one through to ten.
These numbers in the image are from the perspective of the person performing the number sign with the right hand.
This video by Rob Neilson at WestwoodASL.com is a great showcase of numbers one (1) through to twenty (20)
Make sure to check out Rocket Sign Language as a comprehensive course for learning sign language.