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1、精选优质文档-倾情为你奉上1、 There are five balls with differentweights. Everyball is less than(少于 ）100g。Now weigh（称）every two balls，and you will get 113,116,110,117,118,114,112,121,120,and115g .What is the weight of the heaviest(最重的)ball?2. Six trees are equally spaced along one side of a straight road. The dis
2、tance from the first tree to thefourth is 60 feet. What is the distance in feet between the first and lasttrees?3、Xiao Ming bought 4 pencils . Each cost X yuan. He paid 2.5yuan and got0.1back. How much did each pencil cost?1、有五个球重量都不一样，每个球少于100克，现在称每两个球，得到113,116,110,117,118,114,112,121,120和115克，这些球
3、最重的是多重？解答：62g 设5个球分别为ABCDE，由题意可知A+B+C+D+E=289，AB两个最轻，两个最重，由此可得22、六棵树平均地分布在一条笔直的路上从第一棵树到第四棵树的距离是60英尺那么第一棵树到最后一棵树的距离是多少呢？解答： 100feet3、小明买了4支铅笔，每一支花X元，他付了2.5元然后找回了0.1元，那么他每支铅笔花了多少钱？解答：0.6元5、There are 40 chickens on farm. The hens are 8 more than the cocks. How many hens? The hens are_.The cocks are_.6、
4、Jack is twice as old as Bill,who is eight yeaars younger than Ben,who is four years younger than Ted,who is half as old again as Jack. how old is bill?7、Lilys father is four times as old as her brother. Her brother is two times as old as her. Lily is four years old. How old is her father?5、农场里面有40只鸡
5、，母鸡(hen)比公鸡(cock)多8只，有多少只母鸡？多少只公鸡？解答：公鸡有16只，母鸡有24只6、Jack 的年纪是bill的两倍，bill比ben年轻8岁，ben比ted少4岁，ted是jack年龄的二倍，那么bill多大呢？（as old again as年纪比大一倍）解答：设ted年龄为x 那么ben就为x-4，bill为x-4-8，jack为2x-24 可得x=16所以bill4岁7、lily爸爸的年龄是她哥哥的四倍，他哥哥年龄是她的两倍，lily现在是4岁，请问她的爸爸多大？解答：lily爸爸32岁b1. Estimate which answer is less than 1
6、. A1/3+1/2 B 2-2/4 C 5/6-1/3 D 11/6-1/22. Which quiz mark would be the same as 80%?A 2/4 B 3/5C 3/4 D 4/53. How much is 2/5 of 35 ?A 175 B 70 C 14 D 7解答：1 Estimate 估算，估计 估算一下哪一个答案比一小 AC 2下面哪些分数和80%相等？ D 3 35的五分之二是多少？ C5. make a cake calls for(需要) 3/8 of a cup of sugar. xiaoming wants to make1/3 of t
7、he cake How much sugar will xiaoming need（需要）?A.1/8 B.1/3 C. 1/4 D. 4/116. In the classroom 1/4 of the people are men, 1/3of the people are women, and the rest (剩下的)are children. If there are 420 people in the classroom, how many are children?A. 105 B. 175 C. 245 D. 1207. Which answer is least（最少、最小
8、） ?A. 3-3/2 B.7/8+5/6 C. 5/4+17/16 D2-1/3解答：5做一个蛋糕需要八分之三杯的糖，小明想做三分之一个，他需要多少的糖？A6教室里面有四分之一是男的（成年），三分之一是妇女，其余的是儿童，如果教室里面有420个人，那么有多少儿童？B7，下面哪一个答案最小？A14. What is2/3 of 27?A.9 B. 18 C. 40.5 D. 5415. Express 47 % as a decimal（小数）.A.0.0047 B. 4.7 C. 0.47 D. 47016. Which number completes the equivalent fra
9、ction? 3/8 = 9/x what is xA.11B.14C.24D.27解答 14、27的三分之二是多少？ B 15、 47%化成小数是多少？C 16、 下面哪一个数是符合这个等式的呢？x值是多少？C12. Which does not mean 75%?A, 6/8 B. 0.75 C. 3/4 D. 7/517. Which fraction is in lowest terms（最低，最小）?A. 5/12 B. 2/8 C.9/6 D. 7/5618. Which is the reciprocal（倒数） of 1+2/3 ?A. 5/2 B. 1/4 C.3/5 D.
10、5/3解答：12下面哪一个不等于75%？D 17 哪一个分数值最小？D 18 一又三分之二的倒数是？C5、How many centimeters（厘米） are in 4000 millimeters（毫米）?6.If m+14=44 what does m equal(等于)?7 What is the value of w if 20w-5=5解答：5、4000毫米等于多少厘米？ 400厘米 6、如果m+14=44 m等于多少？ 30 7、20w-5=5,求w的值 ？ 0.5 2.Wangjing earned $9.75 per hour as a lifeguard（救生员） las
11、t summer. She worked 25 hours a week. About how much did she earn in 10 weeks?3.An earns $25.50 per day working in a shoe store（鞋店）. His boss（老板） pays him $.50 extra（额外） for each package（袋） of shoes he sells. After 5 days of work, An earned $157.50. How many packages of shoes did he sell?4.Susan wan
12、ts to run 30 miles each week. On Monday, she ran 9.5 miles. On Wednesday, she ran 10.25 miles. On Friday, she ran exactly enough miles to reach her goal（目标）. How many miles did she run on Friday?2、解： 9.752510=2437.5（元） 答：她10周可以挣2437.5元。3、解： 157.5 - （25.5 5)=30（元） 30 0.5=60（双） 答：他卖了60双鞋。4、解： 30-（9.5+
13、10.25）=10.25（英里） 答：她周五跑了10.25英里。The following is a list of the last 10 U.S. Presidents（总统）, and their age when they were 1st elected(第一次被选为).Bush 54 Ford 61 Clinton 46 Nixon 55 Bush 64 Johnson 56 Reagan 69 Kennedy 43 Carter 52 Eisenhower 6210. What is the mean age（平均年龄） of the last 10 Presidents? a.
14、 62.3 b. 56.2 c. 60.4 d. none11. What is the median（中间） age of the last 10 Presidents? a. 54 b. 58 c. 55.5 d. none13. What is the range（范围） for the data above?a. 25 d. 23 c. 115 d. none下面是最近10位美国总统和他们的年龄当他们第一次当选总统10 这10位总统的平均年龄是多少? B11、上面10位总统的中间年龄是？C13、上面数据的范围是？D4. A car can travel 48 km on two gal
15、lons of gas. How many miles can a car travel on 20 gallons? A. 240 km B. 480 km C. 640 km D. 960 km5,Paul puts 300 yuan in a savings account that earns 3% interest(利息) annually（每年）. How much interest will he earn after 2 years? A. 9.00yuan B. 18.00 yuan C. 90.00yuan D. 180.00yuan6. A pair of jeans c
16、osting $39.50 is on sale for 25% off. Of the following, which amount is closest to the sale price? A. $9.88 B. $14.50 C. $25.00 D. $29.50解答 4 一辆车行驶48千米需要2加仑汽油，那么20加仑可以行驶多远B 5保罗把300元存在储蓄账户，每年利息是3%，2年后他会得多少利息？B 6 一条牛仔裤标价39.5美元在原价去掉25%以后，下面哪一个接近售价？ D1. If 3x + 7 = 22, what is the value of x?A. 3 B. 5 C
17、. 8 D. 152 . John spent $4.25 for 2 slices of pizza and a soda. If a slice of pizza costs twice as much as a soda, what is the price of the soda?A.$0.75 B. $0.85C. $1.25D. $1.50If 1.2x + 7 = 8.2, what is the value of x?解答：1 如果，3X+7=22 那么X的值是多少？ 5 2 约翰花了4.25买了2份的披萨和一份苏打，如果一份的披萨的价钱是苏打的两倍，那么一份苏打多少钱？B1.
18、 How much more is 15 than 9?2. Add 3, 4, and 14. Share 10 between 2 解答：1. 15比9多多少？ 2. 3加4加1等于多少？“ 3. 把10分为2份是多少？（10除以2）1、 The sum of 130 and X is 250,what is X?2、 Four times of X is 12. What is X?3、 20% of 2/3 of a quarter of 300 is（ ）?1题 250-130=1202题 4x=12 x=33题 3001/42/320%=107. Tim has a piece o
19、f wood that is 16.5 inches long. If he cuts off 5.625 inches, how many inches is the remaining piece?A. 89/8 inches B. 45/4 inches C. 73/8 inches D. 34/5 inches8. 1 mile = 5,280 feet How many feet are in 15 miles?A) 352 B) 35,200 C) 79,200 D) 84,480 E) 89,7609. Greg is 150 centimeters tall. How many
20、 meters is that?A) 0.500 m B) 1.5 m C) 15m D) 15,000 m7.16.5-5.625=10.8758.5280*15=79200 C9.150/100=1.5 B1、 the length of the perimeter of a right triangle is 60 inches and the length of the altitude perpendicular to the hypotenuse is 12 inches. find the sides of the triangle2. A triangle is made of a 60-centimeter-long iron wire. The ratio of three edges is 3:4:5. How long is every edge of the triangle?1、 直角三角形的周长的长度是60英寸的垂直高度的斜边的长度是12英寸。求三角形的边解答：勾股定理2。三角形是由一个60厘米长的铁丝。三条边比3:4:5。三角形的每边有多长？解答：周长是60，三边比是3:4:5，可得三边长为15,20 ，25 专心-专注-专业