计算:1÷50+2÷50+…+98÷50+99÷50=_.
问题描述:
计算:1÷50+2÷50+…+98÷50+99÷50=______.
答
1÷50+2÷50+…+98÷50+99÷50
=
+1 50
+2 50
+…+3 50
+98 50
,99 50
=
,1+2+3+…+99 50
=
,(1+99)×99÷2 50
=
,50×99 50
=99;
故答案为:99.