FLASHCARD: Algebraic Expressions

Flashcard
•
Mathematics
•
6th - 8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an algebraic expression?
Back
An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols (like +, -, *, /). For example, 3x + 5 is an algebraic expression.
2.
FLASHCARD QUESTION
Front
What does the term 'variable' mean in algebra?
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.
3.
FLASHCARD QUESTION
Front
What is a coefficient in an algebraic expression?
Back
A coefficient is a numerical factor that multiplies a variable. In the expression 4x, 4 is the coefficient.
4.
FLASHCARD QUESTION
Front
How do you simplify the expression 2x + 3x?
Back
You combine like terms to simplify it: 2x + 3x = 5x.
5.
FLASHCARD QUESTION
Front
What is the value of the expression 3x + 2 when x = 4?
Back
Substituting x with 4 gives: 3(4) + 2 = 12 + 2 = 14.
6.
FLASHCARD QUESTION
Front
What does it mean to evaluate an expression?
Back
To evaluate an expression means to calculate its value by substituting the variables with specific numbers.
7.
FLASHCARD QUESTION
Front
What is the difference between an expression and an equation?
Back
An expression is a combination of numbers and variables without an equality sign, while an equation states that two expressions are equal, using an equality sign.
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