Topic 3 Review - Expressions (- equivalent expressions)

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

What does it mean for two expressions to be equivalent?

Back

Two expressions are equivalent if they have the same value for all values of the variables.

Front

What is the value of 3^3?

Back

27

Front

What is the result of 12 - 4 · 2?

Back

4

Front

What is 5^2 + 3^3?

Back

52

Front

How can you express 9 · 9 · 9 · 9 · 9 using exponents?

Back

9^5

Front

What does '4 less than a number' mean in algebraic terms?

Back

It is represented as n - 4, where n is the number.

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 is the value of 2^4?

Back

16

Front

How do you simplify the expression 3x + 4x?

Back

You combine like terms to get 7x.