Numerical Expression

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.

Front

What does the order of operations tell us?

Back

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

Front

How do you evaluate the expression 27 ÷ 3 + (15 - 4) x 4?

Back

First, solve the parentheses: (15 - 4) = 11. Then, multiply: 11 x 4 = 44. Next, divide: 27 ÷ 3 = 9. Finally, add: 9 + 44 = 53.

Front

What expression represents Ethan's egg collection situation?

Back

(18 - 6) × 3 represents the number of eggs Ethan collects after giving some away, multiplied by the number of weeks.

Front

How do you represent Emily's earnings after working 8 hours at $10 per hour?

Back

The expression 50 + (8 x 10) represents Emily's total money after adding her initial amount of $50 to her earnings from work.

Front

What is the total time Angelina listens to music if she listens to three 4-minute songs and two 3.5-minute songs?

Back

The expression m = 3(4) + 2(3.5) calculates the total minutes by multiplying the number of songs by their duration and adding the results.

Front

What is the result of the expression 33 - 60 x 2 ÷ 3 + 18?

Back

Following the order of operations, the result is 11.

Front

What does the term 'expression' mean in mathematics?

Back

An expression is a combination of numbers, variables, and operations that represents a value.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equal sign and represents a value, while an equation states that two expressions are equal and includes an equal sign.

Front

How do you simplify the expression 15 - 4?

Back

To simplify 15 - 4, subtract 4 from 15, which equals 11.