5.4 F 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 the order of operations refer to?

Back

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

Front

What is the value of the expression 20 - [(2 x 2.75) + 6.30]?

Back

$8.20

Front

How do you calculate the total cost of multiple items?

Back

To calculate the total cost, multiply the price of each item by the quantity purchased and then add the costs together.

Front

What is the value of the expression [15 + 4(2.30)] ÷ 4?

Back

$6.50

Front

What is the first step to solve the expression 12[6.3 + 3(1.9)]?

Back

The first step is to solve 3(1.9).

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by performing operations and combining like terms.

Front

What is the value of the expression 25 - 3 x 4 + (6 ÷ 2)?

Back

16

Front

What is the purpose of parentheses in a numerical expression?

Back

Parentheses indicate which operations should be performed first in a numerical expression.

Front

What is the result of multiplying a number by zero?

Back

The result of multiplying any number by zero is always zero.