One Step Equations with Adding Subtracting Multiplying Dividing

What is the first step to solve this equation? 
13 + c = 25

• Add 13 to both sides

• Subtract 13 from both sides

• Add 13 to one side and subtract 13 from the other 

• Add 13 to C

5 - (-12)

• -7

• 7

• 17

• -17

-10+4

• -14

• 14

• -6

• 6

-9 + 9

• 18

• -18

• 0

• 81

- 2 + - 9

• -11

• 11

• -7

• 7

− | -13 | =

• 0

• 13

• undefined

• − 13

-632 + 632 =

• 1264

• -1264

• -1

• 0

A scuba diver dove down 25 feet, then swam up 11 feet. Which equation represents this and the diver's current position?

• -25 + - 11 = -36

• -25 + 11 = -14

• -25 + 11 = -36

• -25 + 11 = 14

Which expression has the sum of 0?

• 0 - 8

• 0 + -8

• -8 - 8

• 8 + (-8)

Select ALL equations that demonstrate Additive Inverse

• -8 + 0 = -8

• 8 + -8 = 0

• 0 + -8 = -8

• -8 + 8 = 0

• 8 + 8 = 0