1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51+52+53+54+56+57+58+59+60+61+62+63+64+65+66+67+68+69+70=?
5m 6dm = ...dm
45+43=...
76+7=...
9:3+13
5:5+45
5 10 15 20 25 .... ..... ..... 45 ..... 50 .... 60 65 70 .... 80 ..... ..... ..... 100
ĐIỀN SÔ VÀO CHỖ .....
tính nhanh
13+15+16+48+59+68+59+68+59+45+65+25+25+1+6+5+9+5+6+
65 + 43 = ??
Ai lam chuoc minh tich cho nhe
1+5+7+8+9+10+10+15+16+19+22+65+97+34+28-5-9-6-7-2-45-68 bằng bao nhiêu
tìm x
a, 54+x-65+3=12
b,x-45+65=59
625+45
65+785