90.7*99.90.7 简算
问题描述:
90.7*99.90.7 简算
答
90.7*99+90.7
=90.7*(99+1)
=90.7*100
=9070
90.7*99.90.7 简算
90.7*99+90.7
=90.7*(99+1)
=90.7*100
=9070