The order of operations in real number set.
The operations are : add (+), subtract( - ), multiply (x ),
divide(: ),take to a
power or just power and find the nth root.
More information:
*Also the sign of - when it means the additive inverse sign or the op

Math 0240-01 Fridays Lecture & agenda.
Part A. Review on chapter R- students bring their questions to
class.
Part B. Chapter 1. Section 1.1
1. Determine : a statement or not
i. 4+1/23= 93/23 ii 3x + x x/7=-27/7 X iii. 3x=24
iv. -6x+9=14 v. 2x-6=7(x-4)
vi.

Lecture. ChR
*The set of natural numbers. N
*Set, notations, terms, a proper subset, a set builder
notation, an empty set. Operations between sets*
* Six Operations, and rules of operations ( what you are
aloud to do and what you are not aloud to do [a ma

Lecture #2. Section 1.1 and more.
List of terms and their
definitions/examples/explanation.
1. A statement: Israel is a name of a country in the
Middle East. Why, because you may determine
yes or no. The above is a true statement.
2. DO you think that the

Lecture 1b ( more material for ch R)
The properties of multiplication in Qcfw_rational numbers) and
therefore also in R.( real number set)
If a,b,c are rational numbers.
There exist the following properties.
1. abc is a member of Q.
2. a1=1a. 1 is identit

A Summary/addition to lecture: The story about N W I Q
In (N,+) we have the following properties . These properties
will continue to exist in W,I,Q,R
If a,b,c are natural numbers complete a_N b_N c_N
(then)
1. a+b=b+a (com.)
2. (a+b)+c=a(b+c) (ass.)
3. a+

A sample for Quiz #1. Ch R and 1.1
Name:_ID_
Please show all your work to get credit,
a. Solve the equation x+y=0 if x
N
b. Solve the equation 3x+4=24 if X
c. Solve the equation
3
x 1
8
if
yN
I
xR
d. Solve the equation for all real number and simplify.
-2

Quiz #1 On 3.1. prep Test#1.
substitution and elimination.
Name:_ID_
A.
* Determine if the following system is ready for solving
by the substitution method?
-3x -6y =20
x=-2-y
Circle:
Yes No
* Solve it by the substitution method
B. Determine if the follow