ACT考试：ACT数学考试的例题解析，必看

　　各位小伙伴有很多都在备考ACT考试，其中ACT数学部分虽然对于中国考生来说是很轻松的，但在平时也不可以松懈，还是要勤加练习，那么今天小编就个大家带来了ACT数学考试的例题详解，一起来看看吧。

　　例题一：

　　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。

　　例题二：

　　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。

　　以上就是小编今天带来的全部内容，希望对大家有所帮助，想了解更多关于ACT数学考试试题的内容，可以添加微信号kewo11。