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Miscellaneous
Multiplication & Addition
Multiplication & Subtraction
Division & Addition
Division & Subtraction
100
A letter used to represent an unknown number
What is a variable?
100

2k + 5 = 17

2k = 12


k=6

100

3a - 5 = 4

3a = 9


a = 3

100

m/5 + 4 = 12

m/5 = 8


m = 40

100

z/6 - 8 = 2

z/6 = 10


z = 60

200
The opposite of addition
What is subtraction?
200

2a + 11 = 35

2a=24


a=12

200

5m - 7 = 23

5m = 30


m = 6

200

y/8 + 11 = 13

y/8 = 2


y = 16

200

y/9 - 15 = 5

y/9 = 20


y = 180

300
The four basic operations
What are addition, subtraction, multiplication, and division?
300

2r + 39 = 65

2r = 26


r = 13

300

6k - 5 = 43

6k = 48


k = 8

300

k/8 + 21 = 97

k/8 = 76


k = 608

300

z/6 - 14 = 3

z/6 = 17


z = 102

400
A number right in front of a variable
What is a coefficient?
400

12s + 27 = 171

12s = 144


s = 12

400

4j - 71 = 29

4j = 100


j = 25

400

g/11 + 37 = 128

g/11 = 91


g = 1001

400

y/9 - 18 = 52

y/9 = 70


y = 630

500

Who is The best math teacher ever!!!!

Who is Mrs. Russell?

500

19b + 314 = 1663

19b = 1349


b = 71

500

21q - 39 = 234

21q = 273


q = 13

500

w/10 + 100 = 500

w/10 = 400


w = 4000

500

d/10 - 300 = 750

d/10 = 450


d = 4500