F=S=A is a way to show work while using a formula. It is short for Formula=Substitute=Answer. Here is an example of FSA in action:
Volume=Length x Width x Height= 5.15cm x 4.23cm x 2.36cm = 51.4 mL
I feel that FSA is a good way to organize work and easily figure out what to do next while solving a complex problem.
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