12 + 88 =

(a)  

33 - 10 + 25 - 7 =

(a)  

8 x 3 =

(a)  

2 x 4 x 6 =

(a)  

 $100\ \div\ 50\ =$ 

(a)  

80 + 6 x 5 =

(a)  

12 - 8 + 15 - 10 =

(a)  

202 x 3 =

(a)  

4 + 24 + 50 - 22 =

(a)