Answer :
well, take
10
10
+___
what is 10 two times?
0+0= 0
1+1=2
so, that equals 20. now ad 5 to twenty and you get 25
10
10
+___
what is 10 two times?
0+0= 0
1+1=2
so, that equals 20. now ad 5 to twenty and you get 25