630-(188÷12×2)简便运算?
问题描述:
630-(188÷12×2)简便运算?
答
630-(188÷12×2)
=630-(47/3 ×2)
=630-94/3
=630-(30+4/3)
=600-4/3
=598又2/3
先算括号里的乘除