Unit 3 Review 6th grade -----------Semester 1

Front

What are coefficients in an expression?

Back

Coefficients are the numerical factors in terms of an expression. For example, in the expression 4x + 6y + 2, the coefficients are 4 and 6.

Front

Evaluate 5^3.

Back

125

Front

Back

15

Front

What are constants in an expression?

Back

Constants are the fixed values in an expression that do not change. In the expression 4x + 6y + 2, the constant is 2.

Front

What is a variable?

Back

A variable is a letter that stands for an unknown number.

Front

What is an expression in mathematics?

Back

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

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not include an equality sign.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting variables with numbers.

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: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

What is a term in an algebraic expression?

Back

A term is a single mathematical expression that can be a number, a variable, or a combination of both, separated by + or - signs.