_____  number should be add to 5, to get 0? 

-3/5 - -4/5 = 

I had 25 sweets with me. I give 10 of them to my friend. How many sweets are left with me. 

If the temperature is -5^oC and it increases by 7^oC. What is the present temperature? 

For any positive numbers x and y, -x + -y = 

Difference between 15 and 7 is. 

____  - 10 = 8 

For any positive number x and y, x - (-y) = 

-4 - (-5) =