343千克,拿出几个零件后,剩下的净重301千克,一个零件的重量是几千克?
13、动物园的饲养员给三群猴子分花生,如果只分给第一群,则每只猴子可得12粒,如果只分给第二群,则每只猴子可得15粒,如果只分给第三群,则每只猴子可得20粒,那么平均分给三群猴子,每只可得多少粒?
14、爷爷对小明说:“我现在的年龄是你的7倍,过几年是你的6倍,再过若干年就分别是你的5倍,4倍,3倍,2倍。”爷爷和小明现在分别是几岁?
图形的面积计算
1、如图所示,三角形ABC的面积为1,并且A E=3AB,B D=2 BC,那么,三角形B D E的面积是多少?
2、如图所示,在三角形ABC中,B D=1 / 3 BC,三角形ABC的面积是1平方厘米,那么三角形A D C的面积是多少平方厘米?
3、如图所示,在三角形ABC中,A D=1 / 3 AB,B E= EF= F C,C G= 1 / 3 C A,阴影部分面积占三角形ABC面积的几分之几?
4、如图所示,B D=1 / 3 BC,三角形ABC的面积是48平方厘米, A C=16厘米,A E=11厘米,三角形A D E的面积是多少?
5、如图所示,A E=1 / 5AC,CD=1 / 4 BC,B F=1 / 6AB,求三角形 DEF与三角形ABC的面积之比。
6、如图所示,把三角形ABC的B A边延长1倍到D点,AC边延长3倍到F点,C B边延长2倍到E点,连接DE、EF、F D,得到三角形DEF,它的面积是54平方厘米,三角形ABC的面积是多少?
7、如图所示,设BD、DE、E C的长分别是2、4、2,F是线段A E的中点,三角形ABC的边BC上的高为4,求三角形DEF的面积。
8、如图所示,三角形ABC的面积是1,A E= E D,BD=2 /3 BC,求阴影部分的面积。
9、如图,ABCD是平行四边形,三角形E AB是直角三角形,AB=80米,E B=70米,阴影部分比三角形EFH的面积大120平方米,则 H B长多少米? 10、如图,两个正方形地块,边长分别是80米和40米,那么阴影部分的面积是多少平方米?
11、如图,在三角形ABC中,CD=2 BD,CE=3 AE,阴影部分的面积是20平方米,那么三角形A B D与E CD的面积之和是多少?
12、如图,已知正方形甲的边长是50米,正方形乙的边长是40米,则图中阴影部分的面积是多少平方米?
( )1. Good morning! ! A.Morning ! B.Hello ! C.Hi !
( )2. Nice to see you again ! . A.How are you ? B.Nice to see you , too . C.How do you do ? ( )3.Good night,mom ! A.Night ! B.Good night ! C.Good evening .
( )4.How do you do ? A.How are you ? B.Fine,thanks . C.How do you do ? (
)5.How
many
story
books
do
you
have ?
A.I have 10. B.I can see 10. C.Thirty yuan.
( )6.Do you have new teachers? A.Yes,we do . B.Yes,we don’t. C.Yes,we have . (
)7.Who
’
s
your
art
teacher ? A.Mr Zhu. B.Miss Zhu. C.He’s tall. ( )8.What’s he like? A.He’s tall and strong . B.Yes,he is. C.Mr Zhu.
( )9.Is your English teacher young? A.No,she isn’t. B.Yes,she is . C.No,she is.
( )10. ? Her name is Chen Jie. A.What’s your name ? B.What’s she name ? C.What’s her name ?
( )11. ? I like Chinese,math and English. A.What classes do you like? B.What do you like? C.What are you like ?
( )12. ? We have English and P.E. A.What do you have on Mondays ? B.What do you have ? C.What do you have on Monday?
( )13. ? It’s Monday.
A.What is it today ? B.What day is it today ? C.What day is today ? ( )14. ? I watch TV and do my homework. A.What do you do ? B.What do you do in Mondays? C.What do you do on Sundays ?
( )15.May I have a look ? A.Sure.Here you are . B.Look ! C.Here you are .
( )16.Our math teacher is Canada. A.from B.in C.at
( )17.I three new teachers. A.has B.am C.have
( )18.What’s Chinese teacher like ? A.you B.your C.you’re
( )19.My P.E.teacher is thin. A.too B.so C.very
( )20.There are days in a week. A.six B.seven C.eight
( )21.There are month(月)in a year(年). A.ten B.eleven C.twelve
( )22.I often watch TV Saturday . A.on B.in C.at
( )23.I like P.E. I don’t lime music.
A.but B.and C.so (
)24.This
is
apple.
It
is red apple.
A.a , a B.an,an C.an, a ( )25.What do you like ? A.classes B.class C.class’s 六年级英语测试题
Class: Name:
( )1. How are you ? A.Fine,thanks. B.Yes,it is. C.How are you ? ( )2. Nice to meet you ! A.Fine,thank you. B.OK. C.Nice to meet you ,too !
( )3. How do you go to school ? A.I go to Canada by plane. B.I go to school by bike. C.What about you ? (
)4.
How
do
you
go
to
the
USA ?
A.I usually go to school by bus. B.I go to England by ship. C.I go by plane. ( )5. ? My home is near the post office.
A. Where is your home ? B.OK. C.See you then!
( )6. See you at 2 o’clock. A.See you then ! B.The fifth floor. C.It’s easy.
( )7. ? You can go by the No.15 bus.
小学五年级奥数练习题及参考答案
![](/skin/haowen/images/icon_star.png)
![](/skin/haowen/images/icon_star.png)
![](/skin/haowen/images/icon_star.png)
![](/skin/haowen/images/icon_star.png)