TOPIC 3 - Numeric and Algebraic Expressions

Front

What is a numeric expression?

Back

A numeric expression is a mathematical phrase that includes numbers and operation symbols (like +, -, ×, ÷) but no variables.

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that includes numbers, variables (like x, y), and operation symbols.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting numbers for the variables and performing the operations.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute a number across a sum.

Front

How do you write an expression for 'the cost of 3 CDs and a $10 DVD'?

Back

The expression is 3c + 10.

Front

What is the value of 8^2 + 14 x 2?

Back

The value is 92.

Front

What is the value of 7^3?

Back

The value is 343.

Front

How do you express '6 more than 3 times x'?

Back

The expression is 3x + 6.

Front

What does it mean for a math sentence to be true or false?

Back

It means that the left side of the equation equals the right side when evaluated.

Front

What is the first step in evaluating an expression with exponents?

Back

Calculate the value of the exponent first.