ACT数学部分的考试对于中国学生来讲还算比较容易的。当然即便是简单我们也不要轻易忽略。下面是澳际小编为大家总结一些关于数学部分的ACT真题复习资料。有意参加美国ACT考试的朋友可以先来了解一下。希望对您有所帮助。

　　美国ACT考试，数学部分ACT真题复习资料具体如下

　　1. 3x3·2x2y·4x2y is equivalent to:

　　A. 9x7y2

　　B. 9x12y2

　　C. 24x7y2

　　D. 24x12y

　　E. 24x12y2

　　解析：The correct answer is C. To find an equivalent expression, you can multiply the constants (3·2·4), combine the x term (x3x2x2 → x3+2+2 → x7, because when you have a common base you use the base and add the exponents), and combine the y terms (y·y → y1y1 → y1+1 → y2). The result is 24x7y2.

　　正确答案选C。常数相乘(3·2·4)，合并x项(x3x2x2 → x3+2+2 → x7) 和y项(y·y → y1y1 → y1+1→ y2)，结果为24x7y2。

　　2. Mr. Dietz is a teacher whose salary is $22,570 for this school year, which has 185 days. In Mr. Dietz's school district, substitute teachers are paid $80 per day. If Mr. Dietz's takes a day off without pay and a substitute teacher is paid to teach Mr. Dietz's classes, how much less does the school district pay in salary by paying a substitute teacher instead of paying Mr. Dietz's for that day?

　　F. $ 42

　　G. $ 80

　　H. $ 97

　　J. $105

　　K. $122

　　解析：The correct answer is F. To find Mr. Dietz's pay per day, you can divide his salary, $22,570, by the number of days he works,185. His pay per day is 22570/185, or $122. When Mr. Dietz takes a day off without pay and the school pays a subsititute $80, the school district saves the difference in these amounts, 122-80, or $42.

　　正确答案选F。先算出Dietz先生每天的平均工资，用22570除以185(可用计算器)，即122美元。再用122美元减去学校需要支付临时老师的费用80美元，即可算出学校结余的费用，为42美元。

　　3. So far, a student has earned the following scores on four 100-point tests this grading period:65,73,81, and 82. What score must the student earn on the fifth and last 100-point test of the grading period to earn an average test grade of 80 for the 5 tests?

　　A. 75

　　B. 76

　　C. 78

　　D. 99

　　E. The student cannot earn an average of 80.

　　解析：The correct answer is D. To find what the student needs to score on the fifth 100-point test to average a score of 80, you need to find the point total for the student so far by adding 65,73, 81 and 82. That sum is 301. Averaging 80 points on 5 tests means the student must earn 400 points (80·5). The acore needed on the last test is the difference,400～301, or 99.

　　正确答案选D。该学生前四次共得301分;5次考试平均分为80，意味着5次考试总分需达到400分，那么该学生最后一次考试需要达到的分数为400与301的差，即99分。

　　4. A rectangular lot that measures 150 ft by 200 ft is completely fenced. What is the approximate length, in feet, of the fence?

　　F. 300

　　G. 350

　　H. 400

　　J. 700

　　K. 1,400

　　解析：The correct answer is J. To find the length of fence needed to fence a rectangular lot 150 ft by 200 ft, you need to find the perimeter. The formula for the perimeter of a rectangle is 2 times the sum of the length and width, or P = 2( l+ w). 2(150 +200) =2(350) =700.

　　正确答案选J。所需篱笆的长度即为这块长150英尺宽200英尺矩形土地的周长。根据矩形周长公式，可知：矩形周长=2(长+宽)，即2(150 +200) =2(350) =700英尺。

　　5. The expression a[b+(c-d)] is equivalent to:

　　A. ab + ac - ad

　　B. ab + ac + ad

　　C. ab + ac - d

　　D. ab + c + d

　　E. ab + c - d

　　解析：The correct answer is A. To find an equivalent expression, multiply a by b+c-d. This results in a(b) + a(c) + a(-d), or ab + ac - ad.

　　正确答案选A。根据乘法分配率展开括号可得ab + ac - ad。

　　关于数学部分的ACT真题复习资料就为您总结到这，希望对您的考试有所帮助。若想了解更多美国ACT考试的相关信息，欢迎咨询澳际留学专家。

　　澳际培训在国内首家推出专职“学习规划师”和“留学规划师”制度，对学生全程规划、全程跟踪，全程反馈。我们汇聚了国内外顶级名师，平均教学经验在5年以上，并实行八对一尊享服务——课程规划师，留学规划师，阅读教师，写作教师，听力教师，口语教师，语法教师，词汇教师等八位一体。完善的留学服务保证，整合了十年留学服务经验，让我们能将一流培训和申请服务全程有机结合。澳际50%学子都获得TOEFL 100和SAT 2000以上的分数。

　　澳际六步曲第二步考试指导具体服务项目如下：

　　1. 免费测评模考，分析申请人的问题，制作考试测评报告和备考指导

　　2. 结合申请人的申请目标和考试基础，制定考试整体规划及时间安排

　　3. 提供对申请人有帮助的考试经验和机经等

　　4. 根据需要提供免费口语模拟和指导服务

　　5. 免费修改作文4篇

　　6. 考前心理指导，调整考前心理状态

更多出国留学最新动态，敬请关注澳际教育手机端网站，并可拨打咨询热线：400-601-0022