Introducing Algebra

the product of 34 and z 

• 34/z

• z/34

• z X 34

• 34 - z 

take 10 away from s 

• 10 - s 

• s + 10

• s - 10

• s/10

six times the number of girls
Let g = number of girls

• 6 + g

• 6g

• g - 6

What is a variable in Algebra?

• Something that changes

• An unknown value

• An equation

• A numeric expression

A company sold a total of 150 adult and child tickets to a fundraiser. The company charged $10 for each adult ticket and $6 for each child ticket for $350.

Write an equation to represent the total amount of tickets.

Mathematical Equivalence

ON

Gerardo wrote an integer. The opposite of Gerardo's integer is -53. The two true statements are:

​ (a)   and ​ (b)  

• The integer is 53.

• The integer has an absolute value of 53.

• The integer has an absolute value of -53.

• The integer is -53.

Tags

6.2.B

What is an algebraic expression made of?

• Numbers and operations

• Numbers and multiplication

• Addition and multiplication

• Numbers and variables

d + d + d + d =

• d⁴

• 4d

• d4

• 4 + d

Write the phrase as an expression.
12 fewer than 22

• 22/12

• 12 - 22

• 22 - 12

What is the algebraic expression for                  "the sum of n and 9"?

• n - 9

• n + 9

• n/9

• 9n