Find a missing value given the mean

Lesson: Finding a missing value given the mean

Note to self: don't mention that it's algebra.

Before we can go much further in the course, I have to make sure that everyone can manipulate fractions. If you can: great! You will have an easy time. If you can't - I will show you some new ways to look at it that I hope will help.

Fraction work - everyone has to do it:

Ordering Fractions
Adding Fractions
Subtracting Fractions
Multiplying Fractions

Homework:

Finish the above, and

Finding a missing value given the mean

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