untitled

Solution :
3

13

9

39

9

43 4

4 3



˜

9

52

9

57 5

5 7



˜

? 4 ˜ 3 u 5 ˜ 7  = 25037
27

676

9

52

3

(^13)  
u ˜
The required product is 25 ˜ 0  37 
Example 19. Multiply 0 ˜ 28  by 42 ˜ 1  8 .
Solution :
45
13
90
26
90
8 2
0 28
 
˜ 
11
464
99
4176
99
4218 42
4218

˜
= 12 185
495
6032
11
464
45
(^13) 
u ˜
The required product is 12 ˜ 18  5 
Example 20. 2 ˜ 5 u 4 ˜ 3  5 u 1 ˜ 23  4 ?
Solution :
2
5
10
25
2 ˜ 5
90
392
90
435 43
4 35

˜ 
495
611
990
1222
990
1234 12
1234

˜ 
1344062 ...
8910
119756
8910
196 611
495
611
90
392
2
5
˜
u
u u.
The required product is 13 ˜ 44062
Activity : 1. Multiply 1 ˜ 13  by 2 ˜ 6. 2. 0 ˜ 2 u 1 ˜ 1  2 u 0 ˜ 08  1 ?
Example 21. Divide 7 ˜ 3  2  by 0 ˜ 27 .
Solution :
99
725
99
732 7
7 32

˜
18
5
90
25
90
27 2
0 27

˜ 
? 7 ˜ 3  2 y 0 ˜ 27  2636
11
290
5
18
99
725
18
5
99
(^725) 
y u ˜