150÷2.5+150÷7.5的简便计算
问题描述:
150÷2.5+150÷7.5的简便计算
答
=20x(7.5/2.5+7.5/7.5)
=20x(3+1)
=80
150÷2.5+150÷7.5的简便计算
=20x(7.5/2.5+7.5/7.5)
=20x(3+1)
=80