最后那个几何题是120度不？小学数学确实考得难！

鉴于赌场明年就要开业，小学可加入适当内容。（例题见内）著名的Jim和Ken的问题： Jim用自己的钱换了一堆红筹码，Ken换了一堆蓝筹码。他们互相分了一般给对方。 Jim去玩骰子输了12个蓝筹码，Ken去玩21点输了18个红筹码。现在Jim的红蓝筹码比例为1：7，Ken为1:4 问：Ken买了多少个蓝筹码？ 下面这个自行车的问题变成： Mei和Lin问大耳隆借钱去赌场赌输了后遭到大耳隆讨债，Mei和Lin看到大耳隆来追他们时准备逃跑，要逃到最近的警察局。Mei以每小时20公里的速度逃跑，当Lin跑到一半时，Mei在她前面3.5公里。Mei在10：45分跑到了警察局，问Lin几点时跑到警察局？ Curry puff shop sells puffs at $0.80 each. Offer:Buy 3 get 4th half price. If customer has $50, how many puffs can he buy if he buys as many as he can. Ans: 咖喱包题可以这样出： 赌场开张迎宾大减价，1个筹码买8毛，每买3个能半价买第4个。一个顾客有50块钱，问他买了几个筹码？ 6 friends decided to rent computers from 2pm to 4.30pm. While 4 of them were playing, the other two would watch. If the cycle continues, and each of them played for equal number of minutes, how many minutes will each person g (more...)