Summary
How to use the order of operations (PEMDAS) to evaluate a numerical expression correctly. Mr. J works one step at a time so the answer comes out right.
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Teaching resources
Discussion questions
The order of operations is the agreed-on sequence everyone uses so an expression has one answer.
- What does PEMDAS stand for?
- Why do we need an agreed order of operations?
- Which comes first, multiplication or addition?
Quick work-a-long
Words to know: order of operations, parentheses, exponents, expression
- Evaluate 3 + 4 x 2.
- Evaluate (6 + 2) x 3 - 5.