Evaluating Expressions

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the order of operations in mathematics?
Back
The order of operations is a set of rules that determines the sequence in which calculations are performed. The acronym PEMDAS is often used: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
2.
FLASHCARD QUESTION
Front
Evaluate the expression: -12 ÷ 6 (-3) + 8
Back
-14
3.
FLASHCARD QUESTION
Front
What does the absolute value of a number represent?
Back
The absolute value of a number represents its distance from zero on the number line, regardless of direction. For example, |3| = 3 and |-3| = 3.
4.
FLASHCARD QUESTION
Front
Evaluate 5|3-x| - 15 when x = 5
Back
-5
5.
FLASHCARD QUESTION
Front
What is a variable in an algebraic expression?
Back
A variable is a symbol (usually a letter) that represents an unknown value in an expression or equation. For example, in the expression 2x + 3, 'x' is the variable.
6.
FLASHCARD QUESTION
Front
Evaluate the expression: 2x(3x - y)^2 when x = 3 and y = 5
Back
96
7.
FLASHCARD QUESTION
Front
What is the formula for the perimeter of a rectangle?
Back
The formula for the perimeter (P) of a rectangle is P = 2L + 2W, where L is the length and W is the width.
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