(1÷0.01-90.9)÷0.13 的简便运算?
问题描述:
(1÷0.01-90.9)÷0.13 的简便运算?
答
(1÷0.01-90.9)÷0.13
=(100-90.9)÷0.13
=9.1÷0.13
=70