Order of Operations
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Lesson Summary:
In this lesson, the instructor covers the order of operations for mathematical expressions. They review the sets and operations of real numbers and the shorthand for repeated addition and multiplication. The key takeaway is that parentheses override any other operation and should be done first, followed by exponents, multiplication and division, and finally addition and subtraction. The instructor emphasizes that it's unnecessary to memorize the acronym PEMDAS and provides an alternative method to approach problems with multiple operations.
Lesson Description:
An introduction to order of operations for computations of mathematical expressions.
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Questions answered by this video:
- What order do you do multiplication and division in when performing a computation?
- What is the order of operations?
- How do you know what order to do operations with numbers?
- How do you compute 3 + 4 * 6 * 5^2 / 6 - 2 according to the order of operations?
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Staff Review
This lesson goes through a basic introduction to the order of operations for performing computations. The operations are explained from the ground up as repeated addition, and this idea is used to determine which operations should be done first. Although the concepts are explained in a very basic way, this lesson jumps right into problems including all operations.
