求150道初一水平的数学题， 实数计算题(1)23+(-73)(2)(-84)+(-49)(3)7+(-2.04)(4)4.23+(-7.57)(5)(-7/3)+(-7/6)(6)9/4+(-3/2)(7)3.75+(2.25)+5/4(8)-3.75+(+5/4)+(-1.5)(9)(-17/4)+(-10/3)+(+13/3)+(11/3)(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4))-1+2-3+4-5+6-7；(11)-50-28+(-24)-(-22)；(12)-19.8-(-20.3)-(+20.2)-10.8；(13)0.25-+(-1)-(+3).（14）23+（-17）+6+（-22）（15）-2+3+1+（-3）+2+（-4）（16）23+(-73)（17）(-84)+(-49)（18）7+(-2.04)（19）4.23+(-7.57)（20）7/3)+(-7/6)（21）9/4+(-3/2)（22）3.75+(2.25)+5/4（23）-3.75+(+5/4)+(-1.5)（24）(-17/4)+(-10/3)+(+13/3)+(11/3)（25）(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)（26）(+1.3)-(+17/7)（27）(-2)-(+2/3)（28）|(-7.2)-(-6.3)+(1.1)|（29）|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)（30）(-4)(+6)(-7)二元一次方程组解答的实际问题1、一个机关精简后有工作人员120人，比原来人员少40人，精简了百分之几？2、某机器厂五月份用去钢材68吨，比原计划节约14吨，节约了百分之几？3、徒弟加工零件45个，比师傅加工零件个数的12 多5个，师傅加工零件多少个？4、一段路长30千米，甲队单独修10天完成，乙队单独修15天完成，两队。
英语周报高一外研综合43期参考答案 高一英语下学期期末阶段检测参考答案及部分解析参考答案1-5 CAACC 6-10BCACA11-15 BBCBA 16-20ABCBA 21-25 CABAB 26-30DDCCD31-35 AACDB 36-40AGFDB41-45 BCAAB 46-50CCADD51-55 CBCBB 56-60 DACBC61.to make 62.it 63.checking64.with 65.unusual 66.actually67.as 68.moved 69.a70.that短文改错：71.What is everything.What→How72.to hearing from.hearing→hear73.the invitation of.of→to74.Unlucky，we're going.Unlucky→Unluckily75.on the holiday.去掉the76.there are no way.are→is77.have really good time.really前加a78.really exciting about.exciting→excited79.lot of sun.lot→lots或lot前加a80.I'll finish there.there→hereOne possible version：Dear Jack，I am writing to thank you for yourkindness.It is kind of you to invite us to have dinner with your parents.We had a great time in your house，tastingwestern food，learning about American culture and chatting about what happenedin our class.Your mother has great cooking skills and your father knows a lotabout China，which impressed us a lot。
小学二年级数学智慧树题目
