810%18怎么简便运算
问题描述:
810%18怎么简便运算
答
810÷18
=9×9×5×2÷(9×2)
=9×9×5×2÷9÷2
=9×5
=45
810%18怎么简便运算
810÷18
=9×9×5×2÷(9×2)
=9×9×5×2÷9÷2
=9×5
=45