222
50
nha bn k mk nha bn
T H A N K Y O U
111 + 111
= 111 x 2
= 222
________________
0 + 9 + 1 + 30 + 10
= 9 + 1 + 30 + 10
= 10 + 30 + 10
= 40 + 10
= 50
111 + 111 = 222
0 + 9 + 1 + 30 + 10
= (9 + 1) + 30 + 10
= 10 + 30 + 10
= 50
111+111=222
0+9+1+30+10
=10+30+10
=50
k nhé
111+111=222
0+9+1+30+10=50 Như toán lớp 1
111 + 111 = 222
0 + 9 + 1 + 30 + 10 = 50