试题库，四年级下册数学试题

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1，四年级下册数学试题
2，数学类试卷题
3，数学练习题
4，高中主谓一致练习题

1，四年级下册数学试题

设走了X分钟则60X+180=90X 则X=6分钟既同时出门时，走了6分钟，哥哥遇到了妹妹那么设家与学校的距离为Y 则60*6+90*6=2Y 则Y=900 那么家到学校有900米远

四年级下册数学试题

2，数学类试卷题

你好！其实这道就是问（11+13+15+...+999）/10=？ 11到999总共有495个奇数。所以上式等于495*1010/2/10=24997.5 希望能够帮助你

11到999所有奇数之和再除去10就是答案了

数学类试卷题

3，数学练习题

这样的题目如果也要拿出来问，我只能说楼主你的数学学的是一塌糊涂。再者楼主的题目打的也容易引起歧义，到底是4分之1呢，还是什么什么。总之令人无从下手，建议你从小学数学学起，要不连个高中都考不上。

可以先把4提出来然后用拆项计算可以计算出来答案是64/81 你自己再看看谢谢

式子的子项为4/ 其中，第一项和第二项通分得4 =4[10n+2]/ =4*2/ 用归纳法，得式子=4*16/

数学练习题

4，高中主谓一致练习题

1.Nobody but Jane ____ the secret. A. know B. knows C. have known D. is known 2.All but one _____ here just now. A. is B. was C .has been D. were 3.Not only I but also Jane and Mary ____ tired of having one examination after another. A. is B. are C. am D. be 4.A library with five thousnd books _______ to the nation as a gift. A. is offered B .have offered C. are offered D. has offered 5.When and where to build the new factory _____ yet. A. is not decided B. are not decided C. has not decided D. have not decided 6.The number of people invited ______ fifty, but a number of them ____ absent for different reasons. A. were , was B. was , was C. was , were D. were , were 7._____ of the land in that district _____ covered with trees and grass. A. Two fifth , is B. Two fifth , are C. Two fifths , is D. Two fifths , are 8.This is one of the most interesting questions that ____ asked. A. have B. has C. have been D. has been 9.Between then two rows of trees _____ the teaching building. A. stand B. stands C. standing D. are 10.All that can be done___ A .has been done B .has done C. have done D. were done 11.They each _____ a new dictionary. A. has B. have C. is D.are 12.The singer and the dancer ______ come to the meeting. A. has B. have C .are D .is 13.I have finished a large part of the book ; the rest _____more difficult. A. is B. are C. was D. were 14.The wounded _______ by the hospital. A. have been taken in C. has been taken in C. have taken in D .has taken in KEYS: 1-5 BDBAC 6-10 CCCBA 11-14 BBAA