Numerical Expressions

Front

What is a numerical expression?

Back

A numerical expression is a mathematical phrase that includes numbers and operations (such as addition, subtraction, multiplication, and division) but does not have an equal sign.

Tags

TEKS.MATH.6.7A

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. The order is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Tags

TEKS.MATH.7.3B

Front

Solve: 4 + 9 + 8 ÷ 4

Back

15

Tags

TEKS.MATH.7.3B

Front

Back

Tags

TEKS.MATH.6.7A

Front

Solve: 20 x 2 - (10 - 4)

Back

34

Tags

TEKS.MATH.7.3B

Front

Back

Sallie is correct.

Tags

TEKS.MATH.5.4F

Front

Solve: 38 + (9 x 6) ÷ 3

Back

56

Tags

TEKS.MATH.7.3B

Front

What does it mean to evaluate an expression?

Back

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

Front

Back

16

Tags

TEKS.MATH.5.4F

Front

What is a parenthesis used for in numerical expressions?

Back

Parentheses are used to indicate which operations should be performed first in a numerical expression.

Tags

TEKS.MATH.5.4F