Vocabulary
What is a Variable?
An unknown value, a letter of the alphabet.
Simplify 2(4x+7)
8x+14
Evaluate for 2x when x=8
16
Write an expression for 9 times a number.
9n
Rewrite 15+20 as a product of the GCF and the sum of the remaining factors.
What is an exponent?
Repeated multiplication of a base.
Simplify 2x+3x-9
5x-9
Evaluate 12-(19-y)+5, when y=8
6
Ms. Bennett has 70 Jolly Ranchers to divide evenly among s students. Write an expression that explains how many Jolly Ranchers each student will get.
70/s
Rewrite 18+90 as a product of the GCF and the sum of the remaining factors.
18(1+5)
What is a Constant?
A number without a variable, a normal number.
Simplify 2x+8y+6+2x-7y
4x+1y+6
Evaluate (1/2)6
1/64
A school has h hallways. Each hallway has 12 classes. Write the expression that represents how many classes are in the school.
12h
Rewrite 6+20 as a product of the GCF and the sum of the remaining factors.
2(3+10)
What is a Like Term?
The same variable raised to the same power.
Simplify (4x-5)6
24x-30
Evaluate (4.5)4
410.0625
Write the expression for the following phrase: 90 divided by n, plus 12.
90/n +12
Rewrite 45+72 as a product of the GCF and the sum of the remaining factors.
9(5+8)
What is the difference between an expression and an equation?
An expression has no equal sign. An equation has an equal sign.
Simplify -8[2(5x+1)]-1
-80x-17
Evaluate r/12 +5r when r=24
122
Write the expression for the following phrase: 2 less than 7 times Paizley's age.
7p-2
What are the four ways to rewrite 12+24 as a product of a common factor and the sum of the remaining values.
2(6+12), 4(3+6), 3(4+8), 12(1+2)