99乘48用乘法分配律怎么解
问题描述:
99乘48用乘法分配律怎么解
答
99×48
=(100-1)×48
=100×48-1×48
=4800-48
=4752
答
=(100-1)×48
=100×48-1×48
=4800-48
=4752