SSAT數(shù)學(xué)備考
知識(shí)點(diǎn) 時(shí)間:2021-02-07 14:23
SSAT數(shù)學(xué)考題難度并不是很大,然而由于是全英文考試,給一些考生在理解上造成了一些障礙,本文為大家分享8道SSAT數(shù)學(xué)考試真題,并提供了答案及解析,本套試題主要涉及利率、追擊問(wèn)題、平均數(shù)等相關(guān)知識(shí)點(diǎn),同時(shí)我們還為大家?guī)?lái)三大SSAT數(shù)學(xué)常見(jiàn)解題方法,正在備考SSAT數(shù)學(xué)的考生不妨前來(lái)嘗試做一下!

1、What is the perimeter of a rectangle with side lengths of 8 and 3?
(一個(gè)長(zhǎng)方形的邊長(zhǎng)為8 和3 ,它的周長(zhǎng)是多少?)
A. 6 B. 11 C. 16 D. 22 E. 25
答案:D
解析:長(zhǎng)方形周長(zhǎng)=(8+3)*2=22
2、Two cars start from the same place two hours apart. The first car travels at 10 miles per hour and the second travels at 15 miles per hour. How many hours after the second car leaves does it take for the second car to catch up?
(兩輛車從一個(gè)地方出發(fā),一個(gè)先走兩個(gè)小時(shí)。甲車每小時(shí)走十英里,乙車每小時(shí)走15英里。當(dāng)乙車開(kāi)始走的時(shí)候,它需要多久才可以追上甲車?)
A. 1 B. 2 C. 3 D. 4 E. 5
答案:D
解析:追擊時(shí)間=路程差÷速度差,追擊時(shí)間=10*2/(15-10)=20/5=4
3、What interest rate is necessary to get $1000 in interest over 2 years on a $10000 investment?
(投資10000美元,那么利率為多少的時(shí)候,在兩年里才可以得到1000美元的利息?)
A. 4% B. 5% C. 6% D. 7% E. 8%
答案:B
解析:利息=本金×存期×利率,1000=1000*2*利率,利率=1000/1000*2=0.5=5%
4、The sum of 14 consecutive integers is 217. What is the sixth number in the series?
(14個(gè)連續(xù)整數(shù)的總和是217.那么這個(gè)序列中第六個(gè)數(shù)是幾?)
A. 13 B. 14 C. 15 D. 16 E. 17
答案:B
解析:設(shè)第六個(gè)數(shù)為x,那么可列出算式(x-5)+(x-4)+(x-3)+(x-2)+(x-1)+x+(x+1)+(x+2)+(x+3)+(x+4)+(x+5)+(x+6)+(x+7)+(x+8)=217,抵消后得14x+21=217,x=14。
5、In a classroom of 35 students, 14 are male. What percent of the classroom is male?
(教室里有35個(gè)學(xué)生,14個(gè)是男生。 那么教室里男生的比例是多少?)
A. 14% B. 20% C. 30% D. 40% E. 50%
答案:D
解析:教室里男生的比例=14/35=0.4=40%
6、At Joes Steakhouse the hourly wage for a chef is 20% greater than that of a dishwasher, and the hourly wage of a dishwasher is half as much as the hourly wage of a manager. If a managers wage is $8.50 per hour, how much less than a manager does a chef earn each hour?
(在喬德牛排餐廳的廚師的小時(shí)工資比一個(gè)洗碗工多20%,洗碗工每小時(shí)的工資是經(jīng)理人的每小時(shí)工資的一半。如果一個(gè)經(jīng)理的工資是每小時(shí)8.50美元,那么廚師比經(jīng)理每小時(shí)少賺多少錢(qián)?)
A. $5.95 B. $4.25 C. $5.10 D. $3.25 E. $3.40
答案:C
解析:經(jīng)理工資每小時(shí)8.50美元,洗碗工工資每小時(shí)4.25美元,廚師工資=4.25+4.25*20%=5.1
7、Lenny's average score after 3 tests is 88. What score on the 4th test would bring Lenny's average up to exactly 90?
(Lenny 三次考試以后的平均分是88. 那么第四次考試她需要考多少才可以使其平均分為90?)
A. 92 B. 93 C. 94 D. 95 E. 96
答案:E
解析:90-88=2,2*3=6,90+6=96
8、A certain machine can make 3 widgets every 2 seconds. At this rate, how many widgets will be made in 1 minute?
(某機(jī)器可以在2秒內(nèi)造出3個(gè)零件。那么一分鐘此機(jī)器可以造出多少零件?)
A. 90 B. 110 C. 150 D. 180 E. 220
答案:A
解析:一分鐘=60秒,60/2=30,30*3=90
接下來(lái)為正在備考的你分享了三大SSAT數(shù)學(xué)常用解題方法:
1. 代入法
例題:If x and y are two different integers and the product 35xy is the square of an integer, which of the following could be equal to xy?
A. 5 B.70 C. 105 D. 140 E. 350
解答:將答案依次帶入,所以正確答案應(yīng)該是C選項(xiàng)。
2. 巧解法
例題:At a certain diner, Joe orders 3 doughnuts and a cup of coffee and is charged $2.25. Stella orders 2 doughnuts and a cup of coffee and is charged $1.70. What is the price of 2 doughnuts?
A. $ 0.55 B. $ 0.60 C. $ 1.10 D. $ 1.30 E. $ 1.80
解答:按照常規(guī)的解題思路,我們可以用字母x和y分別指代“炸面包圈”和“咖啡”的價(jià)格,然后建立2個(gè)方程式3 x+y= $ 2.25 , 2 x+y= $ 1.70,最后求出方程組的解x=$ 0.55,y =$ 0.6。
3. 邏輯推理法
SSAT數(shù)學(xué)題中有一類題和數(shù)學(xué)運(yùn)算毫無(wú)關(guān)聯(lián),采用邏輯推理即可完成。此類題題目較少,其實(shí)只要掌握了恰當(dāng)?shù)姆椒ǎ忸}十分容易。

最新文章 More

2019-10-30
AP物理c力學(xué)詞匯整理,掌握這些學(xué)習(xí)更輕松!-
2020-04-15
-
2021-10-27
-
2019-11-06
-
北京培訓(xùn)alevel的機(jī)構(gòu)該怎么選擇?
2020-04-02
相關(guān)推薦

猜你喜歡 More

2021-02-04
SSAT寫(xiě)作考什么,要怎么備考?
2019-10-12
ACT報(bào)名流程指導(dǎo),ACT考試費(fèi)用多少?
2020-02-06
GCSE物理考試中有關(guān)壓強(qiáng)的題型精講