计算:100-99+98-97+96-95+…+4-3+2-1=______

计算:100-99+98-97+96-95+…+4-3+2-1=______.
2024-11-15 21:29:44
推荐回答(1个)
回答1:

100-99+98-97+96-95+…+4-3+2-1,
=(100-99)+(98-97)+(96-95)+…+(4-3)+(2-1),
=1+1+1+…+1+1,
=1×50,
=50.
故答案为:50.