10.7-8

(a)  

72- (9.8)=

(a)  

2.3.4=

(a)  

30-(2. 10)=

(a)  

3.3.3=

(a)  

7.7-9=

(a)  

6+ (64:8)=

(a)  

(10.9)-(9.9)=

(a)  

2.7.2=

(a)  

35:7+22

(a)  

5.2.2

(a)  

9.1.2=

(a)  

20:10.8

(a)