小胖前两次数学测验的平均成绩是93分,第三次的成绩是90分,小胖三次测验的平均成绩是( )分.
小胖前两次数学测验的平均成绩是93分,第三次的成绩是90分,小胖三次测验的平均成绩是( )分.
其他人气：329 ℃时间：2020-01-27 20:04:10
优质解答
（93×2+90）÷3 =92（分）
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