Writing and Solving 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 it mean to evaluate a numerical expression?

Back

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

Front

What is the order of operations?

Back

The order of operations is a set of rules that tells you the sequence in which to perform calculations: 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

Solve: 5 x (7 - 4) - 3 x 2

Back

9

Front

Choose an expression for: Four less than the product of 14 and 5

Back

(14 × 5) – 4

Front

Choose an expression for: The product of 6 and 8, divided by 4

Back

(6 × 8) ÷ 4

Front

What is a product in mathematics?

Back

A product is the result of multiplying two or more numbers together.

Front

What does 'less than' indicate in a numerical expression?

Back

'Less than' indicates subtraction in a numerical expression.

Front

What is the difference between an expression and an equation?

Back

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

Front

How do you represent 'the sum of a number and 10' in a numerical expression?

Back

You can represent it as x + 10, where x is the number.