1.1 Variables and Expressions
Vocab to Know:
variable
constant
numerical expression
algebraic expression
Translate the algebraic expression into words.
x+7
y - 10
6-w
2x
x
3
Write an algebraic expression for each verbal phrase.
two thirds multiplied by a number
three more than half a number
the product of a number and four
the quotient of eight cubed and a number
Practice Problems:
1. 4 43 + (-3 43 )
2. x - 2
3.
2
5
4
5
for x = 1 15
7
8
3. On Thursday, the Dow Jones Industrial Average
went down 108.35 points. On Friday, it went down
another 507.99 points. Write an expression first,
then find the total decrease for these two days.