ORDER OF OPERATIONS: Problem 3

Rule 20:
Multiplication and division must be completed before addition and subtraction.

Problem 3: Calculate tex2html_wrap_inline13 .

Answer: The answer is -11.

Solution:
The problem contains addition and subtraction. Solve it was you would if you were entering the numbers into your calculator. The calculator will go through the following steps:

tex2html_wrap_inline17

Solution 2:
You could also solve the problem by grouping each pair of number. The problem

tex2html_wrap_inline13 could be written tex2html_wrap_inline21 and again as tex2html_wrap_inline23 .

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Author: Nancy Marcus

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