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The Number System: Fluency, Factors, Multiples
Practice with Numerical Expressions
Description
Practice with Numerical Expressions
Introduction
Numerical expressions are math statements made up of numbers and operation symbols, such as addition, subtraction, multiplication, and division. Practicing numerical ...
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Transcript
Sam is working on a math puzzle in which he has to solve two expressions: 15 – 3 × (8 – 5) + 4² and (6 + 20 ÷ 4) × 3.
He uses the Order of Operations by remembering PEMDAS, which means he solves parentheses first, then exponents, then multiplication or division from left to right, and finally addition or subtraction from left to right.
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