未分类题

2017四年级上册数学寒假作业2及答案 四年级数学寒假作业及参考答案
一、计算题(能简便的要简便)
(280+320)÷[(40-30)×2] (7×8715+3×8715)÷15 4500÷25÷4
35×38+35×62+65×39+35×39 320×25÷16 125×88
102×208-102×108 101×399-399 125×56
36×208-8×36 548-(148+285) 360×48÷9÷8
二、文字题
1、25除175的商加上17与13的积,和是多少?
2、从4000除以25的商里减去13与12的积, 差是多少?
3、被除数是432, 商是13, 余数是16, 求除数.
4、一个数的8倍减去480,得16,这个数是几?
四、应用题
1、服装厂计划6天生产720套服装,实际提前1天完成生产任务,实际每天生产多少套?
2、有苹果8000千克,原来计划每箱装16千克,实际每箱改装20千克,可以比原来少用箱子多少个?
3、一架飞机的飞行速度每小时840千米,比火车速度的10倍还多40千米,火车每小时行多少千米?
4、食堂运来一批煤,原计划每天烧60千克,可以烧12天;由于改进了烧煤的装置, 结果每天少烧15千克,这批煤可以烧多少天?
5、电讯工人装一批电杆,每天装12根,30天可以完成,如果每天装15根,只要几天就能装完?提前了几天?
6、王师傅一月份共生产840个零件, 二月份 比一月份的2倍少生产120个, 二月份生产零件多少个?
7、卫生间的地面长4米,宽1米,如果用边长为2分米的正方形地砖铺地,需要多少块?

A.
4、一个数的8倍减去480,得16,这个数是几?
四、应用题
1、服装厂计划6天生产720套服装,实际提前1天完成生产任务,实际每天生产多少套?
2、有苹果8000千克,原来计划每箱装16千克,实际每箱改装20千克,可以比原来少用箱子多少个?
3、一架飞机的飞行速度每小时840千米,比火车速度的10倍还多40千米,火车每小时行多少千米?
4、食堂运来一批煤,原计划每天烧60千克,可以烧12天;由于改进了烧煤的装置,

【参考答案】


一、计算题(能简便的要简便)
(280+320)÷[(40-30)×2]
=600÷[10×2......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)
热门 试题

未分类题
Hitchhiking When I was in my teens (十几岁) and 20s, hitchhiking was a main form. of long-distance transport. The kindness or curiosity of strangers______【51】me all over Europe, North America, Asia and southern Africa. Some of the lift-givers became friends, many provided hospitality ______【52】the road. Not only did you find out much more about a country than ______【53】traveling by train or plane, but also there was that element of excitement about where you would finish up that night. Hitchhiking featured importantly in Western culture. It has books and songs about it. So what has happened to______【54】? A few years ago, I asked the same question about hitchhiking in a column on a newspaper. ______【55】of people from all over the world responded with their view on the state of hitchhiking. 'If there is a hitchhiker's______【56】it must be Iran, ' came one reply. Rural Ireland was recommended as a friendly place for hitchhiking, ______【57】was Quebec, Canada 'if you don't mind being berated (严厉指责) for not speaking French. But while hitchhiking was clearly still alive and well in many parts of the world, the ______【58】feeling was that throughout much of the west it was doomed (消亡). With so much news about crime in the media, people assumed that anyone on the open road without the money for even a bus ticket must present a danger. But do we______【59】to be so wary both to Hitchhike and to give a lift? In Poland in the 1960s, ______【60】a Polish woman who e-mailed me, ' the authorities introduced the Hitchhiker's Booklet. The booklet contained coupons for drivers, so each time a driver ______【61】somebody, he or she received a coupon. At the end of the season, _____【62】who had picked up the most hikers were rewarded with various prizes. Everybody was hitchhiking then. Surely this is a good idea for society. Hitchhiking would increase respect by breaking down ______(63 ) between strangers. It would help fight______【64】warming by cutting down on fuel consumption as hitchhikers would be using existing fuels. It would also improve educational standards by delivering instant ______【65】in geography, history, politics and sociology.(51)A.madeB.tookC.traveledD.crossed