Order of Operations and Expressions

Front

What is the Order of Operations?

Back

The Order of Operations is a set of rules that tells you the correct sequence to evaluate a mathematical expression. The order is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Often remembered by the acronym PEMDAS.

Front

What does 'evaluate' mean in mathematics?

Back

To evaluate means to calculate the value of an expression by performing the operations according to the Order of Operations.

Front

What is a numeric expression?

Back

A numeric expression is a combination of numbers and operations (like addition, subtraction, multiplication, and division) that represents a value.

Front

What is the first step in solving the expression 3 + 4 x 6 - 4?

Back

The first step is multiplication. You should calculate 4 x 6 before doing addition or subtraction.

Front

Solve: 9 - 3 + 4

Back

10

Front

Which numeric expression matches 'two times the sum of eight and seven'?

Back

2 x (8 + 7)

Front

What is the result of 7 x [32 - (3 x 4)]?

Back

140

Front

What is the error in the calculation: 5 - 3 + 2 = 5 - 5 = 0?

Back

The error is that addition was done first instead of subtraction.

Front

What does 'parentheses' mean in the context of Order of Operations?

Back

Parentheses are symbols used to group parts of an expression. Operations inside parentheses should be performed first.

Front

What is the difference between addition and subtraction?

Back

Addition is the process of finding the total or sum by combining numbers, while subtraction is the process of finding the difference by taking one number away from another.