vocabulary
What is a like term?
Terms with the same VARIABLE and the same EXPONENT; you can add them or subtract them together :)
6 - 8
-2
2/4
0.5
x + 10 = 45
x = 35
simplify this ratio into a unit rate --> 8:20:4
2:5:1
What is a unit rate?
any ratio where one of the numbers is a 1
-19 + (-1) + (-5) + 30
5
38/100
0.38
5x = 100
x = 20
If there are 50 marbles, and 16 of them are yellow, what percentage of the marbles are yellow?
32 percent
What is the difference between an equation and an expression?
equations have equal signs; expressions don't have to
-5 x -10
50
39/50
3x + 5 = 35
x = 10
simplify this fraction. 64/100
16/25
what is a variable?
a symbol, usually a letter, that represents a number we don't know the value of yet.
8 / (-2) x 5
-20
1/8
0.125
13x - 10 + 7x = 10
x = 1
Factor. 6x - 3
3(2x - 1)
What does PEMDAS mean, and what is its purpose?
Parentheses, Exponents, Multiplication/Division, Addition/Subtraction. This is the order in which you should perform the operations in a math problem.
8 x (-5) - (-10) + 15
-15
1/9
0.111111...
5x = 2x
x = 0
How much wood would a woodchuck chuck if a woodchuck could chuck wood?
Just messing with you! 200 free points for the confidence you needed to choose this space!