小东买了2个毛毽,每个毽子8角5分,还剩7角2分,小东一共有多少钱?
8角5分=0.85元,7角2分=0.72元,
0.85×2+0.72=2.42(元).
答:小东一共有2.42元.
-- Sorry, it's already 6 o’clock. I have to be off for an appointment.
--- OK. ________.
A.It couldn’t be better
B.You really have me there
C.Let’s call it a day
D.Take your time
正常参考值范围应()
A.取双侧界限
B.取单侧界限
C.同时计算单侧和双侧界限
D.根据实际情况取单侧或双侧界限
E.以上都不是