Expression Situations and Phrases

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

How do you represent '10 less than a number n' as an expression?

Back

The expression is n - 10.

Front

What does the phrase 'a number multiplied by the sum of 3 and 5' translate to in mathematical expression?

Back

The expression is (3 + 5)n.

Front

If Domino's sells p pizzas for $6 each and charges $5 for delivery, how would you express the total cost of buying p pizzas and having them delivered?

Back

The expression is 6p + 5.

Front

How do you express the situation where Eli evenly splits 25 candies among c classmates?

Back

The expression is 25 ÷ c.

Front

What is the expression for combining f football cards and b baseball cards and splitting them among 5 notebooks?

Back

The expression is (f + b) ÷ 5.

Front

What is the difference between an expression and an equation?

Back

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

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

How do you simplify the expression 6p + 5 when p = 2?

Back

Substituting p = 2 gives 6(2) + 5 = 12 + 5 = 17.

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents an unknown value in an expression or equation.