6th grade math expressions

Front

What is the order of operations in math?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. 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 it mean to evaluate an expression?

Back

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

Front

What is a mathematical expression?

Back

A mathematical expression is a combination of numbers, variables, and operators (such as +, -, ×, ÷) that represents a value.

Front

What is the result of (4 - 2) x 9 + 7?

Back

The result is 25. First, evaluate the parentheses: (4 - 2) = 2. Then multiply: 2 x 9 = 18. Finally, add: 18 + 7 = 25.

Front

What is the first step in evaluating 12 ÷ 3 x 4?

Back

The first step is to perform the division: 12 ÷ 3 = 4.

Front

What is the value of 5 · 2 - (11 - 7)?

Back

The value is 6. First, evaluate the parentheses: (11 - 7) = 4. Then calculate: 5 · 2 - 4 = 10 - 4 = 6.

Front

What is the result of (10 + 5) - 6?

Back

The result is 9. First, add: (10 + 5) = 15. Then subtract: 15 - 6 = 9.

Front

How do you write an expression for '5 less on dinner than James spent'?

Back

The expression is j - 5, where j represents the amount James spent.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression is a combination of numbers and variables without an equality sign.

Front

What does the term 'variable' mean in math?

Back

A variable is a symbol (often a letter) that represents an unknown value in an expression or equation.