Lessons 21-24 Flashcards
1
Q
When you have the average and all but one of the numbers that make it, how do you find the final one?
A
You multiply the number that is the average by the number of numbers that go into it and then subtract the numbers that you do know.
2
Q
How do you go about multiplying three or more fractions?
A
You start by canceling, try to match with common factors in mind. Then you reduce them and multiply the reduced terms. When one of the fractions is to be divided, put the reciprocal and multiply as directed above.
