数学提高训练11.doc

数学提高训练十一 姓名 成绩 一、能力提升： 1. 2,007 cattle and buffalos are in a cattle ranch, 1,105 of them are female, 1,506 are cattle and 200 are male buffalos, then how many female buffalos are there? 牧场上有2,007头黄牛和水牛，其中1,105头式母的, 1，506头是黄牛，200 头是公水牛，请问母水牛有多少? 2. During a period of time, the hour hand, minute hand, second hand turn and the total laps they turn is exactly 1466, then how many seconds are there in this time? 在一段时间内，小时针，分针，秒针一起转动公1466圈，请问这个时候有多少秒？ 3. As shown in the graph, cut the square ADFE from the rectangular ABCD, the perimeter of the remaining rectangle EFCB is 100cm, then how many centimeters is AB? 如图所示，将正方形ADFE从长方形ABCD里剪下，剩下的长方形EFCB的周长是100厘米，AB之间是多少厘米？ 4. As shown in the graph, the area of the outermost square is 60 square centimeters, then what is the area of the innermost square? 如图所示，最外围的正方形的面积是60平方厘米，最内圈的正方形的面积是多少？ 5. Three same pots of red flower and four same saffron yellow flowers are placed in a row, the red flowers are requested not to be adjacent, how many different methods may you have? 三瓶相同的红花和四朵同样的金黄色的话，放成一排，红色的花被要求不放在相邻的位置，你有多少种不同的方法。 6. As shown in the box, the appropriate number should be filled in table to make the sum of three numbers on every row, every column and each diagonal equal. Then which number should be filled in the box labeled ★? 如图所示，在图标里填入合适的数字，是每一排的数字之和，每行和每列都相同，★里必须填什么数字？ 7. Insert the number 0 in the middle of a double-digit number to get a three-digit number. The new number is 8 times and one smaller than the original double-digit number. What is the original double-digit? 把零加入到两位数之间以得到一个三位数，新的数字是原来两位数的八倍小一，请问原来的两位数是多少？ 8. At 10:28:06, the time was displayed on the electronic clock as shown in the graph. Well, during the period from 10:00 to 10:30, how many times the six figures shown on the electronic clock are different? 在10:28:06，时间如图所示出现在电子钟上，从10:00 到10:30之间,有多少次六个数字在电子钟上出现都不同？ 9, There is a glass of salt water. firstly, when a certain amount of w