Bài 2: 55+1= 9+22= 87+1= 13+13= ...
Đọc tiếp
Bài 2: 55+1= 9+22= 87+1= 13+13= 9+2= 77+11= 70+1= 90+3= 00+1= 11+33=
TL
56 31 88 26
11 88 71 93
1 44
HT
87+1=88
77+1=78
00+1=1
55+1=56
13+13=26
70+1=71
11+33=44
9+22=31
9+2=11
90+3=93