65.4-(32.5 15.4)怎样简便 计算
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65.4-(32.515.4)怎样简便计算65.4-(32.515.4)怎样简便计算65.4-(32.515.4)怎样简便计算题目应该是65.4-(32.5+15.4)吧65.4-(32.5+15.4
65.4-(32.5 15.4)怎样简便 计算
65.4-(32.5 15.4)怎样简便 计算
65.4-(32.5 15.4)怎样简便 计算
题目应该是65.4-(32.5+15.4)吧
65.4-(32.5+15.4)
=65.4-32.5-15.4
=65.4-15.4-32.5
=50-32.5
=17.5
原式=65.4-15.4-32.5
=50-32.5
=17.5