Algebraic Expressions and Equations

Front

What is the identity property of addition?

Back

The identity property of addition states that when you add zero to any number, the result is that number. For example, 17 + 0 = 17.

Front

If Marco weighs 11 pounds and is 10 pounds less than Harper, how do you represent Harper's weight with an equation?

Back

h - 10 = 11, where h represents Harper's weight.

Front

What is an algebraic expression?

Back

A mathematical phrase that uses numbers, variables, or both with operations. For example, 3x + 5.

Front

What is the associative property of addition?

Back

The associative property of addition states that the way in which numbers are grouped when adding does not change the sum. For example, 3 + (6 + 4) = (3 + 6) + 4.

Front

What does it mean to represent an expression?

Back

To represent an expression means to write a mathematical phrase that shows a relationship between numbers and variables. For example, 'The difference of ten and two' can be represented as 10 - 2.

Front

What is a variable in algebra?

Back

A symbol, often a letter, that represents an unknown value in mathematical expressions or equations.

Front

What is a coefficient?

Back

A coefficient is a numerical factor in a term of an algebraic expression. For example, in 4x, 4 is the coefficient.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac. It allows you to multiply a single term by each term inside a set of parentheses.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression is a combination of numbers, variables, and operations without an equality sign.

Front

What is the commutative property of addition?

Back

The commutative property of addition states that changing the order of the addends does not change the sum. For example, 5 + 3 = 3 + 5.