Expressions vs Equations

Front

What is a numerical expression?

Back

A numerical expression is a combination of numbers and operations (like addition or subtraction) without any variables. Example: 3 - 1.

Front

What operation does 15y represent?

Back

15y represents multiplication, where 15 is multiplied by the variable y.

Front

What are coefficients in an expression?

Back

Coefficients are the numerical factors in terms of an expression. In 5x - 8y + 3, the coefficients are 5 and 8.

Front

What is a term in mathematics?

Back

A term is a single number, variable, or the product of numbers and variables. Example: In 3x + 5, both 3x and 5 are terms.

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that includes numbers, variables, and operations. Example: 3 + 17 - k.

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.

Front

What does the variable 'x' represent in an expression?

Back

The variable 'x' represents an unknown value that can change or vary.

Front

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

Back

When x = 2, the expression 3 + 4x equals 3 + 4(2) = 3 + 8 = 11.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. In the expression 5x + 3, the number 3 is a constant.

Front

What is the purpose of parentheses in expressions?

Back

Parentheses indicate which operations should be performed first in an expression.