Now that you know how to read significant figures off a scale, you'll need to use them properly in math problems. The days of rounding your answer to whatever number of digits you want to are over! Do not mourn them!
Tyler DeWitt talks this: youtube.com/watch?v=5UjwJ9PIUvE
"And knowing is half the battle": youtube.com/playlist?list=PLCEDFE5ACCB968C8E
Crash Course on this: youtu.be/hQpQ0hxVNTg