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 the expression 45 x 7 represent?

Back

It represents 45 times as much as 7.

Front

How do you write the expression for adding 6 and 3, multiplying the sum by 9, and then subtracting 4?

Back

(6 + 3) x 9 - 4.

Front

What is the value of the expression (3 x 6) + 2?

Back

The value is 20.

Front

In which expression will 4 + 5 be the first step in simplifying?

Back

In the expression 9 x (4 + 5) - 2.

Front

How can you express the total number of beads if Mary has 3 boxes of key chains with 6 beads each?

Back

You can express it as 6 x (3 x 8).

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

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

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 states that two expressions are equal.

Front

What is the result of multiplying a number by zero?

Back

The result is always zero.