Writing Algebraic Expressions

Front

A number, z less than 20.

Back

20 - z

Front

c is decreased by twice d.

Back

c - 2d

Front

Twice the sum of m and n.

Back

2(m + n)

Front

Double the sum of one third of a and m.

Back

2[(1/3)a + m]

Front

Sum of numbers m and n decreased by their product.

Back

(m + n) - mn

Front

Definition of an algebraic expression.

Back

An expression that contains numbers, variables, and operations.

Front

What is a variable in algebra?

Back

A symbol (usually a letter) that represents an unknown value.

Front

What does it mean to 'decrease' a number in algebra?

Back

To subtract a value from that number.

Front

What is the distributive property?

Back

a(b + c) = ab + ac

Front

How do you represent 'the product of a and b' in algebra?

Back

ab or a*b