9.9÷(9.9-0.99×9.9)简便计算
问题描述:
9.9÷(9.9-0.99×9.9)简便计算
答
9.9÷(9.9-0.99×9.9)
=9.9÷9.9÷(1-0.99)
=1÷0.01
=100