小六數學help me

3 2
2-----x--------
4 5

11 2
=---------x---------
4 5

11
=----------
10


1
=1-----
10


. 1
. . 媽媽最多可倒滿杯子1個,餘下汽水-----升
10

2007-10-29 18:42:26 補充：
唔知點解個分線上面D數字而灑位!

2.75L /0.4L=6.875
媽媽最多可倒滿杯子6個
餘下汽水0.875/1=875/1000=7/8升

1a.媽媽最多可倒滿杯子:
2 3/4 / 2/5(升)
=11/4 / 2/5(升)
=2.75 / 0.4(升)
=6杯...0.035升

1b.:餘下汽水0.035升

1a. 12個
1b. 2又4份之3/5份之2-12
= 12又-12
= 2份之1
so餘下汽水0.5升

2又4份之3除5份之2..除變乘分子+分母交換 2又4份之3乘5over2=8又3份1=8個
餘3份1

1a. 2又4份之3除5份之2
=11份10

1b.1-11份10
=11份1

1A媽媽最多可倒滿杯子6個
1B餘下:
2又3/4 OFF 2/5

=6升......0.7升

餘下汽水有0.7升

如有錯..唔好見怪!!

1a.23/4/2/5
=11/4*5/2
=55/8
=6

1a:媽媽最多可倒滿杯子幾多個?
2.75/0.4
=6杯...0.35升
1b:餘下汽水幾多升?(1b請列式)
2.75- (0.4*6)
=2.75- 2.4
=0.35升
choose me plz!!
thx1!