Answers

2015-06-14T14:22:40+05:30
50  less than 5 tens is 5 x and than divided it with 5 and than add with 20  and then minus with 30.
it say (5 x 5 ÷ 5 + 20 -30)ans5 
0
2015-06-21T13:33:30+05:30
It is as 50=5tens
10
20
30
40
50
0