简便计算 101×0.87+0.99×87
问题描述:
简便计算 101×0.87+0.99×87
101×0.87+0.99×87
答
101×0.87+0.99×87
=101x0.87+0.99x100x0.87
=0.87x(101+0.99x100)
=0.87x(101+99)
=0.87x200
=174