9.8乘25 简便运算!
问题描述：
9.8乘25 简便运算!
答
9.8乘25
=(10-0.2)×25
=10×25-0.2×25
=250-5
=245
9.8乘25 简便运算!
9.8乘25
=(10-0.2)×25
=10×25-0.2×25
=250-5
=245