A number, variable, or a product of a number and one or more variables
What is a term?
100
6(3+x)
What is 18+6x?
6*3+6*x
18+6x
100
A mathematical sentence that includes an equal sign
What is an equation?
100
x-12=18
What is x=30?
x-12=18
x-12+12=18+12
x=30
100
x-4=10
What is x=14?
x-4+4=10+4
x=14
200
Identical variable parts
What are like terms?
200
4+5x-9+12x
What is 17x+13?
4+9+5x+12x
13+17x
17x+13
200
A value of the variable that makes the equation true
What is a solution?
200
You open a savings account with $30. You deposit an additional $20 every week. Write and solve an equation to find how many weeks it will take you to save $150.
What is 20w+30=150 and the solution w=6?
20w+30-30=150-30
20w/20=120/20
w=6
200
2x-4=10
What is x=7?
2x-4+4=10+4
2x/2=14/2
x=7
300
a(b+c) = a*b+a*c
What is the distributive property?
300
what is equivalent to 35x-21?
What is 7(5x-3)?
35x/7-21/7
7(5x-3)
300
Have the variable, with a coefficent of alone, on one side of the equal sign
What is isolating a variable?
300
5b-3.75=26.25
What is b=6?
5b-3.75+3.75=26.25+3.75
5b/5=30/5
b=6
300
2n+7(3+n)
What is 9n+21?
2n+7(3)+7(n)
2n+21+7n
9n+21
400
A term that has a number
What is a constant?
400
Rewrite the expression without
parentheses.
4t-4(3r-?2)
What is 4t-12r-8?
4t-4*3r-?4*2
4t-12r-8
400
Facts that are always true about equations
What are the properties of equality?
400
Forty two is seven subtracted from half a number. Write the problem and solve it.
What is 42=1/2x-7 and x=98?
42+7=1/2x-7+7
49=1/2x
49*2=1/2x*2
98=x
400
20+3(3x-12)
What is 9x-16?
20+3*3x-3*12
20+9x-36
9x-16
500
The number factor of a term that contains a variable
What is a coefficent?
500
The length of a box is 2.75 times
greater than the width. Write and
simplify an algebraic expression for the box. Use w for the width.
What is 2(2.75w)+2w?=7.5w
500
A number that can be written as a/b, where a and b are whole numbers and b>0
What are rational numbers?
500
5x-6=3x-8
What is x=-1?
5x-3x-6=3x-3x-8
2x-6=-8
2x-6+6=-8+6
2x/2=-2/2
x=-1