1、列式计算:负6又三分之二 的绝对值的四分之一 除以负五分之二 的2倍所得的商.
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1、列式计算:负6又三分之二 的绝对值的四分之一 除以负五分之二 的2倍所得的商.
2、计算:四分之三*(-7)-(-15)*一又四分之三-0.75*2
3、计算:(-1)的50次方+(-2)的三次方+负二分之一的五次方+(-1)的七次方
4、解下列方程:80% + 60% (500 – x ) = 500×70%
5.求不等式组 {x-(4x-1)<7的整数解.
{2x+1分之3 - x分之2≤1
6、解方程组 { -6x+5y-3z=-4
{ 6x-3y+z=8
{ 6x+y+4z=9
7、三角形三边之比为 2∶3∶4,最长一边比其余两条边之和短4厘米,求三角形的周长
8、一件工程,甲单独做8天完成,甲、乙两人合作5天可完成,甲、丙两人合作4天可完成,求甲、乙、丙三人合作,几天可完成?
9、某次数学测验,两个班级合格率是81%,如果一班的合格率是71%,二班的合格率是90%,两班人数是95人,求两个班人数各是多少人?
10、算式 1× (- 2) × 3 × (- 4) × … × 29 × (- 30) 的积的末尾有多少个零?
It was Jane’s birthday.It was seven o’clock.Everything was ready.Her mother was cooking in the kitchen and her father was still at work.On the table,there were many different kinds of food.And in the middle of the table there was a very big cake.13 candles were on the cake.Jane was looking at it,and felt excited.“Why haven’t they come by now?I told them to come at seven.” Jane said to her mother worriedly.One,two,three ...twenty-five minutes passed.But no one came.Jane ran to the door and opened it.No one was there.When it was half past seven,the doorbell rang.Jane opened the door quickly.“Happy birthday to you!” they said.And they gave some flowers to Jane.After that,they ate the big cake,apples,oranges,pears and so on.They sang and danced happily.At ten they went home.They all felt tired but happy.
1.What was Jane’s mother doing at seven o’clock?
________________________________
2.Were Jane’s friends at Jane’s home at seven?
_______________________________
3.When did Jane’s friends come?
_______________________________
4.What did they give to Jane?
________________________________
5.Did they have a good time?
________________________________
( )1.He can play ____ piano very well.He is ____ intelligent boy.
A.the; a B.the; an C./; the D./; a
( )2.We shouldn’t wash our dishes ____ a running tap.
A.in B.on C.under D.for
( )3.People can live ____ about three to seven days without water.
A.on B.in C.for D.at
( )4.My uncle should stop ____.He has a bad cough.
A.smoke B.smokes C.smoking D.to smoke
( )5.Tourists can enjoy ____ seafood on Hainan Island.
A.many B.much C.a few D.a little
( )6.Mr Lin is ill.So Mrs Wang will teach us Chinese ____ him.
A.instead B.besides C.instead of D.but
( )7.If Danny ____ too much pizza every day,he ____ fatter and fatter.
A.eat,will be B.eats,will be C.will eat,is D.will eat,will be
答得越完整、正确率越高,给得分也越多,你想要多少分就多少分!让你致富啊~
2、计算:四分之三*(-7)-(-15)*一又四分之三-0.75*2
3、计算:(-1)的50次方+(-2)的三次方+负二分之一的五次方+(-1)的七次方
4、解下列方程:80% + 60% (500 – x ) = 500×70%
5.求不等式组 {x-(4x-1)<7的整数解.
{2x+1分之3 - x分之2≤1
6、解方程组 { -6x+5y-3z=-4
{ 6x-3y+z=8
{ 6x+y+4z=9
7、三角形三边之比为 2∶3∶4,最长一边比其余两条边之和短4厘米,求三角形的周长
8、一件工程,甲单独做8天完成,甲、乙两人合作5天可完成,甲、丙两人合作4天可完成,求甲、乙、丙三人合作,几天可完成?
9、某次数学测验,两个班级合格率是81%,如果一班的合格率是71%,二班的合格率是90%,两班人数是95人,求两个班人数各是多少人?
10、算式 1× (- 2) × 3 × (- 4) × … × 29 × (- 30) 的积的末尾有多少个零?
It was Jane’s birthday.It was seven o’clock.Everything was ready.Her mother was cooking in the kitchen and her father was still at work.On the table,there were many different kinds of food.And in the middle of the table there was a very big cake.13 candles were on the cake.Jane was looking at it,and felt excited.“Why haven’t they come by now?I told them to come at seven.” Jane said to her mother worriedly.One,two,three ...twenty-five minutes passed.But no one came.Jane ran to the door and opened it.No one was there.When it was half past seven,the doorbell rang.Jane opened the door quickly.“Happy birthday to you!” they said.And they gave some flowers to Jane.After that,they ate the big cake,apples,oranges,pears and so on.They sang and danced happily.At ten they went home.They all felt tired but happy.
1.What was Jane’s mother doing at seven o’clock?
________________________________
2.Were Jane’s friends at Jane’s home at seven?
_______________________________
3.When did Jane’s friends come?
_______________________________
4.What did they give to Jane?
________________________________
5.Did they have a good time?
________________________________
( )1.He can play ____ piano very well.He is ____ intelligent boy.
A.the; a B.the; an C./; the D./; a
( )2.We shouldn’t wash our dishes ____ a running tap.
A.in B.on C.under D.for
( )3.People can live ____ about three to seven days without water.
A.on B.in C.for D.at
( )4.My uncle should stop ____.He has a bad cough.
A.smoke B.smokes C.smoking D.to smoke
( )5.Tourists can enjoy ____ seafood on Hainan Island.
A.many B.much C.a few D.a little
( )6.Mr Lin is ill.So Mrs Wang will teach us Chinese ____ him.
A.instead B.besides C.instead of D.but
( )7.If Danny ____ too much pizza every day,he ____ fatter and fatter.
A.eat,will be B.eats,will be C.will eat,is D.will eat,will be
答得越完整、正确率越高,给得分也越多,你想要多少分就多少分!让你致富啊~
1. |-6又2/3|*1/4/((-2/5)*2)=-25/12
2. (3/4)*(-7)-(-15)*(1又3/4)-0.75*2
=-21/4+105/4+3/2
=39/2
3. (-1)^50次方+(-2)^3次方+(-1/2)^5次方+(-1)^7次方
=1+(-8)+(-1/32)+(-1)
=-257/32
4解 0.8+300-0.6x=350
x=82
5.{x>-2
{x≤4/9 所以-2<x≤4/9 整数解为 -1 0
6. { -6x+5y-3z=-4 .①
{ 6x-3y+z=8 .②
{ 6x+y+4z=9 .③
①+② 得2y-2z=4 即 y-z=2 .④
③-② 得4y+3z=1 .⑤
④*4-⑤ 得-7z=7 即z=-1
将z代入④中 得y=1
将y,z代入①中 得x=2
7.4/{(2+3)/(2+3+4)-[4/(2+3+4)]}=36厘米
8.1/[1/8+(1/5-1/8)+(1/4-1/8)]=40/13
9.解设一班有x人
[(95-x)*90%+71%x]/95=81%
解得 x=45 95-45=50
一班有45人 二班有50人
10.末尾有7个零
10*20*30就有3个0 2*5有1个0 4*15有1个0 8*25有2 个0
所以一共7个
英语
1. Her mother was cooking in the kitchen
2.No,they weren't.
3.Half past seven
4.They gave some flowers to Jane
5.Yes,they did
BCCCBCB
2. (3/4)*(-7)-(-15)*(1又3/4)-0.75*2
=-21/4+105/4+3/2
=39/2
3. (-1)^50次方+(-2)^3次方+(-1/2)^5次方+(-1)^7次方
=1+(-8)+(-1/32)+(-1)
=-257/32
4解 0.8+300-0.6x=350
x=82
5.{x>-2
{x≤4/9 所以-2<x≤4/9 整数解为 -1 0
6. { -6x+5y-3z=-4 .①
{ 6x-3y+z=8 .②
{ 6x+y+4z=9 .③
①+② 得2y-2z=4 即 y-z=2 .④
③-② 得4y+3z=1 .⑤
④*4-⑤ 得-7z=7 即z=-1
将z代入④中 得y=1
将y,z代入①中 得x=2
7.4/{(2+3)/(2+3+4)-[4/(2+3+4)]}=36厘米
8.1/[1/8+(1/5-1/8)+(1/4-1/8)]=40/13
9.解设一班有x人
[(95-x)*90%+71%x]/95=81%
解得 x=45 95-45=50
一班有45人 二班有50人
10.末尾有7个零
10*20*30就有3个0 2*5有1个0 4*15有1个0 8*25有2 个0
所以一共7个
英语
1. Her mother was cooking in the kitchen
2.No,they weren't.
3.Half past seven
4.They gave some flowers to Jane
5.Yes,they did
BCCCBCB
1、列式计算:负6又三分之二 的绝对值的四分之一 除以负五分之二 的2倍所得的商.
负 负三分之二减正三分之二的绝对值减负五分之一加负五分之二的绝对值
(1)负五分之二的绝对值与五分之四的相反数的积 (2)-5与3又二分之一的和与二分之三的商 列式并计算
{[二又三分之二/(负二)的立方+(-0.4)的平方*(负六又四分之一)]*(负五分之三)-20}/(负四的平方
(负5的三次方)乘负五分之三加32除以(负二的平方)乘负1又四分之一
负三分之二的绝对值除以二分之负三?
-1减去负三分之二与五分之二的和,所得的差是多少?
六分之一除(三分之二-四分之一的二次方)-(负三分之一)乘(-二又五分之二的二次方)
负四又三分之二减六又三分之一的绝对值减负二又五分之一减负0.8减负二又五分之四的绝对值,
-三又三分之二+-2.4-负的三分之一-负的四又五分之二
负五分之二的绝对值
1.负三分之二于五分之二的差的相反数是多少 2.比负三分之二小负五分之二的数的绝对值是多少