48x1.08+1.2x56.8的简便算法_数学解答

48x1.08+1.2x56.8的简便算法

人气：284 ℃　时间：2020-05-24 03:52:56

解答

48x1.08+1.2x56.8
=48x1.08+48÷40x56.8
=48x1.08+48x(56.8÷40)
=48x1.08+48x1.42
=48x(1.08+1.42)
=48x2.5
=24x2x2.5
=24x5
=120