one step equations
two step equations
vocabulary 1
vocabulary 2: back from the dead
cross products
100
10x = 200
x = 20
100
6x + 7 = 43
x = 6
100
what property is this? a + b = b + a
commutative property of addition
100
the letters are called... 2x 3i y/10
variables
100
x/5 = 2/1
x = 10
200
x/7 = 6
x = 42
200
x/5 + 3 = 23
x = 100
200
what property is this? a + (b + c) = (a + b) + c
associative property of addition
200
what property is this? ab = ba
commutative property of multiplication
200
x/8 = 4/8
x = 4
300
17 + x = 63
x = 46
300
2x - 12 = 28
x = 20
300
the set of numbers 0, 1, 2, 3, 4...
whole numbers
300
what property is this? (ab)c = a(bc)
associative property of multiplication
300
1/3 = x/9
x = 3
400
x - 52 = 102
x = 154
400
10/x + 3 = 5
x = 5
400
the set of all numbers that can be written as the ratio of two integers with a non-zero denominator examples: 2 3/5, -5, 0.3, 13/7
rational numbers
400
what property is this? a(b + c) = ab + ac
distributive property
400
(x+2)/10 = 10/20
x = 3
500
15x = 225
x = 15
500
13x - 69 = 100
x = 13
500
GEMDAS
order of operations (grouping symbols, exponents, multiply, divide, add, subtract)
500
using division to compare two quantities is called... examples: a:b a to b a/b
ratios
500
81/x = 54/6
x = 9
M
e
n
u