11-15

661864782022-10-04 11:39:541条回答

11-15

已提交，审核后显示！提交回复

11-15, 11-15, fiona_lion1年前1: yyzo 共回答了16个问题 | 采纳率75%

C B
11 They make us forget the past.
12My favorite star is the man who is singing now.
13It's raining,though,we are still carry on our work.
14I beat him in swimming yesterday.
15 what time do you think he will come?

1年前查看全部

12/5*8/3+12/5=?（4/3-5/2）*20=?15/8+12/1+12/11-15/8=?（4/3-4/3* 12/5*8/3+12/5=?（4/3-5/2）*20=?15/8+12/1+12/11-15/8=?（4/3-4/3*5）*3/2=?48*（8/5+6/1-3/1)=?（用简便算法来算,写列式出来,） 松散1年前1: qianmianduo 共回答了16个问题 | 采纳率81.3%

(1)=12/5*（8/3 1）=12/5*25/3=4*5=20
(2)没有简便算法（先通分） =(8/6-15/6)*20=-7/6*20=70/3
(3)=15/8-15/8 12/1 12/11=0 12 12/11=144/11
(4)=(4/3-5*5/3)*3/2=(4/3-25/3)*3/2=4/3*3/2-25/3*3/2=4/2-25/2=-21/2
(5)=(50-2)*(8/5 3)=80 150-16/5-6=224-16/5=1104/5

1年前查看全部