A = 26 + 27 + 28 + 29 + 30 + 31 + 32 + 33
A=26+27+28+29+30+31+32+33
A= 26+ 27+28+29+30+31+32+33
Tính nhanh: A = 26 + 27 + 28 + 29 + 30 + 31 + 32 + 33
Tính nhanh: A = 26 + 27 + 28 + 29 + 30 + 31 + 32 + 33
A= 26 + 27 + 28 + 29 + 30 + 31 + 32 + 33
A =26+ 27+ 28+ 29+ 30+ 31+ 32+ 33
A=26 +27+28+29+30+31+32+33
tính nhanh
a=26+27+28+29+30+31+32+33+