1, tính nhanh
a,
43,17+29,57+13,43+57
b
3,25.+4,37.6+2,38.12
c
64.16+81.84+17,17
d 42,15+15,58
m 27+27,39
n 13,28+72,13+37+37,99
h 18,15+35+15,32+35,49
k 2,19.6+3,37.4+44.12
i32.27+43,73.4+44.12
l a=1+2+3+4+.................+50
w 2+4+6+8+......................+100
m 2+5+8+11+..........+..98
h 1+3+5+7 +.............99
p 1+2+3+4+...25
v 3+5+7+9+...................+51
k 1+5+9+13+..........+81
2+4+6+8+..................+50
Loga
Sinh Học lớp 12
