whats 6 - 3 = ?

(a)  

Whats 8 + 2 = ?

(a)  

Whats 7 + 6

(a)  

Whats 10 - 6 =?

(a)  

Whats 5 + 3 =?

(a)  

Whats 9 - 2 = ?

(a)  

Whats 13 - 4 = ?

(a)  

Whats 100 + 100 =?

(a)