Numeric Expressions 5.ATO.2

Front

What is a numeric expression?

Back

A numeric 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 numeric expression?

Back

To evaluate a numeric expression means to perform the operations in the expression to find its value.

Front

What is the order of operations in mathematics?

Back

The order of operations is the rules that determine 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 simplify the expression 15 - 7 + 6?

Back

First, subtract 7 from 15 to get 8, then add 6 to get 14. So, 15 - 7 + 6 = 14.

Front

What is the difference between addition and subtraction?

Back

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

Front

What is the product of two numbers?

Back

The product of two numbers is the result of multiplying them together.

Front

How do you express 'the sum of 45 and 11' in a numeric expression?

Back

You express it as 45 + 11.

Front

What does it mean to multiply a sum by a number?

Back

To multiply a sum by a number means to take the result of the sum and multiply it by that number. For example, if you multiply the sum of 45 and 11 by 2, you write it as 2 × (45 + 11).

Front

How do you write 'subtract 7 from 15' as a numeric expression?

Back

You write it as 15 - 7.

Front

What is the expression for '10 times the difference between 12 and 7'?

Back

You write it as 10 × (12 - 7).