Math Review

Combine Integers

100

-4 + -5

 -9

https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/v/adding-negative-numbers

200

14 + -12

2

https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/v/adding-negative-numbers

300

-10 - 15

-25

https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/v/adding-negative-numbers

400

-2 + -3 + 5

0

https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/v/adding-negative-numbers

500

- 4 - (-10)

6

Multiplying/Dividing Integers

100

- 2 x 4

-8

200

15/3

5

300

- 2 * - 7

14

400

30/ -5 

-6

500

-8(10/2)

-40

Solve for Variable

100

n+6=5

n=-1

200

k-4=10

k=14

300

8x-3 = 13

x=2

400

x/9 -5 = 2

x = 63

500

5x - 5 = 22 + 13

x = 8

Combining Like Terms

100

x+4x+x

6x

200

-13x-8x

-21x

300

-11+5x-4

5x-15

400

-2+x-5x+10

-4x+8

500

9x-3y+y+5-7x+2y

2x+5

Substitution

100

Evaluate for when x = 8

4x - 2 

30

200

Evaluate for when m = 2 

18/m + m

11

300

Evaluate for p=-5

p + 7 * 3 

16

400

Evaluate for a = 3 and b = 4 

a - 3b + 2

- 7 

500

Evaluate for x = 3 

x² - 4x 

-3