10

(a)  

12

(a)  

7

(a)  

2 + 7 =

(a)  

8 + 11 =

(a)  

20

(a)  

100

(a)  

15

(a)  

121

(a)  

13

(a)  

70

(a)  

54

(a)  

11

(a)  

17

(a)  

77

(a)  

48

(a)  

26

(a)  

300

(a)  

62

(a)