456 + 123 =

(a)  

409 + 158 =

(a)  

800 - 300 =

(a)  

690 - 246 =

(a)  

707 - 251 =

(a)  

2 x 3 =

(a)  

7 x 5 =

(a)  

4 x 9 =

(a)  

81 $\div$ 9 = 

(a)