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100-98+96-94+92-90+…+8-6+4-2=.
题目详情
100-98+96-94+92-90+…+8-6+4-2=______.
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答案和解析
100-98+96-94+92-90+…+8-6+4-2.
=(100-98)+(96-94)+(92-90)+…+(8-6)+(4-2),
=2×25,
=50;
故答案为:50.
=(100-98)+(96-94)+(92-90)+…+(8-6)+(4-2),
=2×25,
=50;
故答案为:50.
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