洋文一课一练
A book had 120 pages at first, and each page had 600 words.In the new addition,the number
of words on each page is 20% more than that in the original edition.How many pages does the
book have now?
1minute for caculation
100 pages
In the following numbers, the number that can form a proportion with3, 5, and 6 is(
)
A.6 B.8 C.10 D.12
C
把一根绳子对折5次，这是每段占全长总数的（ ）
2x2x2x2x2=36
三十六分之一
汽车运一批货物，往返一共用了14小时，去时所用时间是回来的一又三分之一倍，汽车去时
比回来时每小时慢20千米，问汽车往返共行了多少千米？？
960千米思密达
判断对错：
甲的三分之一大于乙的四分之一，则甲大于乙
big nono
When the radius of a circle is increased from 3cm to 4cm.it's area is increase by（ ）
square centrimeters
21.98
Given that the area of a sector is S and the area of the circle of which the sector is part
is 5S,than the central angle of the sector is（ ）
D
扇形的面积是314平方厘米，且所在的圆的面积是1256平方厘米，则这个扇形的圆心角度数是
（ ）
90度
The circumference of a circular fish pond is 100.48 meters . There is a circular island with
radius 6 meters within thepond.Find the water area of the fish pond.
690.2
谁是杭州湾最帅的人？
A.李Jackie B.克劳斯 C.米老鼠 D.数学考试
ABC
The area of a circle is ½ of the area of a semicircle.The circumference of a circle is 18.84
centrimeters.How many centrimeters is the perimeter of the semicircle?
30.84
比的前项和后项（ ）
A.都不能为零 B.都可以为零 C.前项可以为零 D.后项可以为零
C
A sheep was tied up with a 4 metre long string to one vertex of a rectangular enclosed
ground, which is 4 metres long and 2 meters wide.All the sides are surrounded by grass.
Draw and work out the biggest area that the sheep can eat the grass.
40.82
某服装商贩，同时卖出两套服装，每套平均卖168元，其中一套盈利20%，另一套亏本20%
则这次出售中商贩（ ）
A不赚不赔 B赚37.2元 C赚14元 D赔14元
D