问题
解答题
1-2+3-4+5-6+L-100+101=______.
答案
1-2+3-4+5-6+L-100+101
=(1-2)+(3-4)+(5-6)+L+101
=-1+(-1)+(-1)+L+101
=-50+101
=51
故答案为:51.
1-2+3-4+5-6+L-100+101=______.
1-2+3-4+5-6+L-100+101
=(1-2)+(3-4)+(5-6)+L+101
=-1+(-1)+(-1)+L+101
=-50+101
=51
故答案为:51.