Numerical Expression

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 operation would you use to find a balance after a withdrawal?

Back

You would use subtraction to find the balance after a withdrawal.

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

How do you represent a situation where you collect eggs and give some away?

Back

You can represent this situation with a numerical expression that subtracts the number of eggs given away from the total collected.

Front

What does the expression 27 ÷ 3 + (15 - 4) x 4 equal?

Back

The expression equals 53.

Front

What is the result of the expression 6 + (4)3?

Back

The result is 18.

Front

How do you simplify the expression (4x8)-(9+7)?

Back

You first calculate 4x8 which is 32, then calculate (9+7) which is 16, and finally subtract: 32 - 16 = 16.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is the difference between an equation and an expression?

Back

An equation is a mathematical statement that shows that two expressions are equal, while an expression is a combination of numbers and operations without an equal sign.

Front

What is the result of multiplying a number by zero?

Back

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