直接写出得数45+2=1-27=710-310=0.8×125-10=25+35=15+35-45=57+514=34+17=5×1.4-0.4×5=78-29+18=

Question

直接写出得数 (4)/(5)+2=	1-(2)/(7)=	(7)/(10)-(3)/(10)=	0.8×125-10=
(2)/(5)+(3)/(5)=	(1)/(5)+(3)/(5)-(4)/(5)=	(5)/(7)+(5)/(14)=	(3)/(4)+(1)/(7)=
5×1.4-0.4×5=	(7)/(8)-(2)/(9)+(1)/(8)=

Answer 1

(4)/(5)+2=2(4)/(5)	1-(2)/(7)=(5)/(7)	(7)/(10)-(3)/(10)=(2)/(5)	0.8×125-10=90
(2)/(5)+(3)/(5)=1	(1)/(5)+(3)/(5)-(4)/(5)=0	(5)/(7)+(5)/(14)=1(1)/(14)	(3)/(4)+(1)/(7)=(25)/(28)
5×1.4-0.4×5=5	(7)/(8)-(2)/(9)+(1)/(8)=(7)/(9)

故答案为：2(4)/(5)，(5)/(7)，(2)/(5)，90，1，0，1(1)/(14)，(25)/(28)，5，(7)/(9)．