Which operation should we do first?

When we are faced with an EXPRESSION to be simplified, sometimes there are many operations (+, - , *, /)
within the expression.
For example how do we handle:   "2 PLUS 3 TIMES 4"
Without commas we do not know which operation to perform first.
---Do we Add 2 and 3 and then multiply by 4?
---OR should we multiplying 3 times 4 and then adding 2?
Mathematicians have come to an agreement that we will
MULTIPLY first and then ADD in this kind of problem.

First Grade Algebra

*****I*LOVE*MATH*****
Ever since you learned
how to ADD in the
first grade you have
been doing Algebra.

Remember those pages
where you had to write
a number into an
empty square with a
to make
the equation "TRUE"?

That was ALGEBRA!


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When you are finished trying these problems,
I will put the correct answers here:
5) x = 4
6) y = 3
7) z = 8
8) w = 5
9) A = 4
10) B = 7

If #10) was written as
3 times B = 21
the solution would be the same.
We will find out later that
B+B+B is 3 times B or 3B