小學數學題

1) 4 & 8/9 divided by 2& 1/2 divided by 12/25
= 44/9 divided by 5/2 divided by 12/25
=44/9 x 2/5 x25/12
= 220/54
= 110/27
= 4 & 2/27 or 4.074 -------(answer)

2) 7 & 1/2 litre divided by 3 & 1/8
= 15/2 divided by 25/8
= 15/2 x 8/25
=12/5
= 2 & 2/5 bottles or 2.4 bottles (answer)
(l litre of oil can be filled into 2.4 bottles (2& 2/5 bottles)


2008-05-14 23:25:35 補充：
2) It should be 2 & 2/.5 litres per bottle instead of 2 & 2/5 bottles (2.4 bottles)

Therefore, l litre of oil can be filled into 5/12 bottle = 12/5 divided by 1 = 5/12 bottle

2008-05-14 23:44:54 補充：
2) The whole equation should be:

1 divided by (15/2 divided by 25/8)
= 1 divided by 12/5
= 5/12 bottle

110份之27,4又9份之2.
可注滿12份之5個油瓶.

4又9份之8除2又2份1除25份之12?
等如4又27份之2


7又2份之1升栗米油可注滿3又8份之1個油瓶,每升栗米油可注滿油瓶多少個?
12份之5個