题目内容
25+26-12-13+27+28-14-15+29+30-16-17=______.
25+26-12-13+27+28-14-15+29+30-16-17,
=(25-12)+(26-13)+(27-14)+(28-15)+(29-16)+(30-17),
=13×6,
=78;
故答案为:78.
=(25-12)+(26-13)+(27-14)+(28-15)+(29-16)+(30-17),
=13×6,
=78;
故答案为:78.
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