d. Evaluate any additions or subtractions from left to right.
e. If an expression is in fractional form, perform stated operations in the
numerator and denominator, then simplify if possible.
Examples:
3 + 10
13
15
15
-------- = ----
------ = ---- = 5
2-4
-2
9-6
3
NOTE:
A good way to remember the order of operations is to use the memory
aid, "Please excuse my dear Aunt Sally." The order for solving algebra
subtraction.
1-8.
EXERCISES, SECTION I
After you have completed these exercises, turn to the end of the lesson and
check your answers with the solutions.
FIRST REQUIREMENT: Identify the property of real numbers that justifies each of the
following mathematical statements:
a. 2 + (p - 1) = (2 + p) -1
--------------------------------------------------------------------
b. 4 + a = a + 4
--------------------------------------------------------------------
c.
1
------ (7 + e) = 1
7+e
--------------------------------------------------------------------
d. 3 X 1 = 3
--------------------------------------------------------------------
e. r (1 + 8) = r + 8r
--------------------------------------------------------------------
MD0837
1-6