Order of Operations and Expressions

Front

What is the Order of Operations?

Back

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

Front

What does PEMDAS stand for?

Back

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Calculate: (5 x 4) x 10^4

Back

200,000

Front

What is the expression for 'the sum of 6 and 5 doubled'?

Back

2 x (6 + 5) is the correct expression.

Front

Insert parentheses to make this true: 3 + 5 x 2 - 10 = 6

Back

(3 + 5) x 2 - 10 = 6 is the correct insertion.

Front

What is the value of 5 x 10^5?

Back

500,000

Front

Calculate: 6,090 x 1/10

Back

609

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, x, ÷) that represents a value.

Front

What is a variable in mathematics?

Back

A variable is a symbol (often a letter) that represents a number that can change or vary.

Front

What is the difference between an expression and an equation?

Back

An expression is a mathematical phrase without an equality sign, while an equation states that two expressions are equal.