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About Josh
Expertise
When I work through problems, I emphasize principles and key ideas which I believe are worth noting. I will try to answer questions in the following areas, but not at the advanced level. Algebra. Sequences & Series. Trigonometry. Functions & Graphs. Coordinate Geometry. Quadratic Polynomials. Exponentials & Logarithms. Basic Calculus. Probability, Permutations and Combinations. Mathematical Induction. Complex numbers. Physics problems.

Experience

Experience:
I have worked as a teaching assistant in college. My hope is that more people will share knowledge without boundary, give help without seeking recognition or monetary rewards.

Supplementary Website:
See a selection of past questions in my maths repository under "Question Archive"

Education Credentials:
Bachelor degree in Engineering Science.

"Everyone struggles with something."

You are here: Experts > Science > Math for Kids > Basic Math > Average

Basic Math - Average

Expert: Josh - 4/1/2008

Question
3 children ages 2, 4, and 6. what was their average age?

Answer
Hello,

The average is obtained in two steps:

1. Add up all the numbers
i.e., 2+4+6=12
2. Divide this by the number of terms you have added
i.e., 12/3=4 is the average age.

You can combine these two steps into (2+4+6)/3 = 4

Example: If the age of four people are 4 8 10 14, what would the average be?

Answer: We add up the four numbers and divide it by four.
(4+8+10+14)/4 = 36/4 = 9. So, the average age is 9.

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