Ch 7 Lesson 2+3 Numerical Expressions

Front

What is a numerical expression?

Back

A numerical expression is a mathematical phrase that includes numbers and operations (like addition, subtraction, multiplication, and division) but does not have an equal sign.

Front

What does it mean to evaluate a numerical expression?

Back

To evaluate a numerical expression means to calculate its value by performing the operations in the correct order.

Front

What is the order of operations?

Back

The order of operations is a set of rules that tells you the sequence to follow when evaluating expressions: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Often remembered as PEMDAS.

Front

What is the sum of two numbers?

Back

The sum is the result of adding two or more numbers together.

Front

What is the product of two numbers?

Back

The product is the result of multiplying two or more numbers together.

Front

What does 'four less than' mean in a numerical expression?

Back

'Four less than' means you subtract 4 from a number.

Front

How do you write 'the sum of 7 and 3' as a numerical expression?

Back

You write it as (7 + 3).

Front

What does 'times' indicate in a numerical expression?

Back

'Times' indicates multiplication.

Front

What is the expression for '6 times the sum of 12 and 8'?

Back

The expression is 6 x (12 + 8).

Front

How do you represent 'three more than the product of five and 7'?

Back

You represent it as (5 x 7) + 3.