Exercises

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

-------- = ----

------ = ---- = 5

2-4

-2

9-6

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

equations is: parenthesis, exponents, multiplication and division, addition and

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

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b. 4 + a = a + 4

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------ (7 + e) = 1

7+e

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d. 3 X 1 = 3

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e. r (1 + 8) = r + 8r

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MD0837

1-6