0.25乘39加3/4乘25加26/4乘3/13用简便方法计算过程_数学解答

0.25乘39加3/4乘25加26/4乘3/13用简便方法计算过程

人气：453 ℃　时间：2020-03-23 02:12:58

解答

0.25x39+3/4x25+26/4x3/13
=1/4x39+1/4x3x25+1/4x26x3/13
=1/4x(39+75+6)
=1/4x120
=30