把下面的分数化成小数．（不能化成有限小数的精确到0.01．）74038142551613253434151720

Question

把下面的分数化成小数．（不能化成有限小数的精确到0.01．）

(7)/(40)	(3)/(8)	1(4)/(25)	(5)/(16)
(13)/(25)	(3)/(4)	3(4)/(15)	(17)/(20)

Answer 1

(7)/(40)=7÷40=0.175
(3)/(8)=3÷8=0.375
1(4)/(25)=(29)/(25)=29÷25=1.16
(5)/(16)=5÷16=0.3125
(13)/(25)=13÷25=0.52
(3)/(4)=3÷4=0.75
3(4)/(15)=(49)/(15)=49÷15≈3.27
(17)/(20)=17÷20=0.85．