24-25 7th Grade Maintenance Sheet 7.1 (units 1 & 2)

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, ×, ÷) that represents a value.

Front

How do you simplify an expression?

Back

To simplify an expression, combine like terms and perform any operations according to the order of operations (PEMDAS/BODMAS).

Front

What does it mean to combine like terms?

Back

Combining like terms involves adding or subtracting terms that have the same variable raised to the same power.

Front

What is the order of operations?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is a variable in an expression?

Back

A variable is a symbol (often a letter) that represents an unknown value in an expression or equation.

Front

What is the value of the expression 4c + 3c - 2c when c = 4?

Back

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Front

How do you evaluate an expression?

Back

To evaluate an expression, substitute the values of the variables into the expression and perform the operations.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions using symbols like <, >, ≤, or ≥.

Front

What does it mean for Rainey’s age to be at most 3 more than twice Sunny’s age?

Back

It means that Rainey’s age can be equal to or less than 3 more than twice Sunny’s age, represented by the inequality 2a + 3 ≤ 35.

Front

What is the result of simplifying the expression (8 - 5)² x 3 - 8 ÷ 2?

Back

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