狼姥姥每日一题PROBLEM SOLVING!!! 25-6-12 更新

狼姥姥

[tr][td]本帖最后由 狼姥姥 于 2012-5-27 20:24 编辑

经常有些朋友问些关于小龙女做些什么数学题。这几天想了一下，有个提议，我把小龙女做过的problem solving放坛子上，也希望各位家长把你们孩子的题也放上来，互相交流，互相换题

我知道坛子里有很多教数学的高手，希望大家多多赐教，多多参与，把答案，解题过程等放上来，互相参考呗

题也不分什么容易啊简单啊，随机抽放。

一直以来我都认为多做一些数学题对大脑发育有很大帮助，而且数学是所有理科的基础，通过这个平台，也可以让你的孩子，每天做一题，来提高他们的数学运算能力和思考能力，孩子还小的家长，现在就可以热热身。 声明，不可以用方程来解。

20.05.2012

老师出了30道问题，答对一道给5分，打错一道扣10分。小龙女 （）得了90分，问她错了几道题。


[/21.05.2012

a truck carries newspapers.
when the truck is half full of newspapers the truck has a mass of 1762kg. when it is a quarter full the truck has a mass of 1426kg.
what is the mass of the truck when it is full of newspaper?
一货车运报纸
货车装满一半的时候，体重为1762kg. 货车装了1/4,体重1426kg. 请问货车装满报纸是多少公斤？



]22.05.2012  

Uma has cubes that come in two different sizes. She makes a stack of 7 small cubes and a stack of 5 large cubes. The two stacks are the same height.

A  large cube is 6 millimetres taller than a small cube.

What is the height of one stack, in millimetres?

23.05.2012
a number has 3 digits. when it is divided by 6 or 7 it leaves a remainder of 1. when it is divided by 8 or 11, it leaves a remainder of 7. what is the largest such number?



24.05.2012

小龙女有24件衣服，其中14件没有口袋，15件短袖，有6件长袖带口袋，问小龙女有几件不带口袋的短袖。


26.05.2012

in a school of 600 students, 320 study korean, 270 study thai and 110 study german.

there are 150 students who study only two languages: 60 students study korean and thai, 50 students study thai and german, and 40 students study german and korean.

at most how many students study all three language?


]27-05-12
马大姐正在攒钱买一件东西。她只有一块和两块钱硬币。她的两块钱的硬币数量是一块钱的两倍。如果她有70元钱，她有多少枚一块钱硬币？
Revenge is sweet!!!!

28.05.12
小龙女can make 2 pies in 3 minutes
马大姐can make 3 pies in 2 minutes

]how many pies can they make together in an hour?
(yes jo, revenge is sweet..... SHB rulz....anyday....even when it comes to making pies)



29.05.12
A group of friends shared 108 chocolates equally, the number of chocolates each friend got was three more than the number of friends. How many chocolates did each friend get?

30-05-12
马大姐is walking up a set of stairs. She stops when she is 5/8 way through. Then she walked another nine steps. This time she is 3/4 way up. How many steps are there in total on the stairs?'


31.05.12
at the local swimming pool it costs $1 to hire a towe and 60c to hire a deckchair. rebecca hired some of each and spent $5.80 altogether. how many towels and deckchairs did she hire?

01.06.12

One morning Luisa,Noor and Manling counted their pencils.they found that Luisa had three times the number of pencils that Manling had and Noor had twice the number that Manling had.
By the end of the day,Noor had lost four pencils,and had 34 pencils left.
How many pencils did Luisa have on that morning?

05-06-12
A father and son have the same birthday.In 2001 the father was 42 and the son was 11.In what year will the father be exactly twice as old as his his son?

8-6-12
A clock is correctly set at three pm. It looses two minutes every hour. What will the clock read when the correct time is 10pm the next day?

09-06-12
How many two-digit numbers are there in which the tens digit is greater then than the ones digit?

紫风百合

狼姥姥二世 发表于 2012-5-29 18:10
学korean 的有320，其中60个人学thai，40 人学german。还剩 220个人学三种语言，或只学korean
学thai有2 ...

犀利呀。这算不算统计呀！

最头疼的就是统计了。

紫风百合

狼姥姥 发表于 2012-5-27 21:57
过程？？？？？？？？？？

笨笨的方法啊。

假设有十块一块的，那就有二十块两块，那就是五十。
所以一块钱硬币要多于10块，那就顺应向上加一块钱，可是70 是个偶数，两块钱也是偶数，那一块钱一定也是偶数。那就10+4块一块钱，+28块两块钱，正好是70块了。。

紫风百合

猪猪不哭 发表于 2012-5-28 15:24
1.错了4道题
2. 2434 KG
3. 105mm

你真厉害！一看你的答案，我怎么觉得我又回到小学时代的那个大马虎了。。

留下足迹

紫风百合 发表于 2012-10-18 15:38
咦，我怎么突然觉得自己数学能力很差。算不过来啦？

哈哈哈哈哈哈。。。。。。我现在也是哎，一看这题目，我就想打哈欠。。。不过，回头好好看看。。。

紫风百合

咦，我怎么突然觉得自己数学能力很差。算不过来啦？

小雨点123

有兴趣的算算~~

QQMYLOVE

5cents X 12, 10cents X 4

狼姥姥

25-6-12
when jenny was sent to get change for the parking metre, she changed a dollar into 16 coins, consisting of 5cent and 10cent pieces. how many coins of each kind were in the change?
$_$  {:7_377:} good luck！！！！！！！ {:7_377:}

QQMYLOVE

Tennis balls - less by 1 dollar

Cork costs 0.05

Stamps - 80+106+94=280/2＝140 stamps

10C X6, 20c X2

8

狼姥姥

21-6-12

6xx5 is a multiple of 9. the two "x' represent the same digit. what does "x" represent?

狼姥姥

20-6-12
Two questions today!!!!

Annie, Blake and Cara collects stamps. Annie and Blake has 80 stamps together. Annie and Cara has 106 stamps altogether. Blake and Cara has 94 stamps altogether. How many stamps does Annie Blake And Cara have altogether.

Bob took eight 10cent and 20cent coins from a piggy bank. He had $1 altogether, how many 10cent coins did bpBob pick out.

狼姥姥

18-6-12

If a bottle and it's cork costs $1.10 and the bottle costs $1 more than the cork, how much doesnthe cork cost?

狼姥姥

Tennis balls are usually sold in a shop at three for four dollars . If e price is changed one saturday for four for five dollars, will the new cost for tennis balls.be more or less than the usual cost for twelve balls, and by how much

seashell0314

帮凶，蚌珠来看你拉。

QQMYLOVE

6.........................................

狼姥姥

A transistor radio company can only package it's radios in boxes of 6 and boxes of 8.what is the least number of full boxes needed to package 44 radios?

无过

哈哈，太有意思了，记得小学好像经常做这样的题

QQMYLOVE

10.............................................

狼姥姥

The average of four numbers is 11.If 6,a fifth number is added to the four numbers,what is the average of the five numbers?

QQMYLOVE

2,3,5,,,,,,,,,,,,,,,,,,,,,,

狼姥姥

10-06-12
When added together three whole numbers give a total of 10.When multiplied together the same numbers give a product of 30.What are the three numbers?

QQMYLOVE

45 - 1+2+3+4+5+6+7+8+9=45

狼姥姥

{:7_382:}{:7_382:}{:7_382:}

QQMYLOVE

8:58pm ................

hades80

补充楼上的，卡车运报纸：（1762-1426）/(1/2-1/4)=1344 报纸的重量；1762-（1344/2）=1090 卡车自身的重量； 1344+1090=2434 卡车满载的重量。
算的比较复杂，应该有简单的

狼姥姥

QQMYLOVE

Uma's cubes - 105mm (大CUBE比小CUBE高6mm，5个共高30mm，也就是2个小CUBE共高30mm, 1个小cube是15mm;one stack的高度是7X15=105mm

the 3 digits number is 799 - 6X7=42,可被6和7整除的最大的3位数是966，＋1是967；8X11＝88，可被8和11整除的最大3位数是968，＋7是975；然后就各减42和88，减几次就都有799了

小龙女的衣服　－　11件　－－10件是有口袋的，其中6件长袖，4件短袖，一共15件短袖，所以没口袋的短袖是11件

最多有20个学3种语言的学生　－　前提是600个学生中有些是3种语言都不学的－这题有点TRICKY，因为600个学生，150个学双语，这两个数字用不上

马大姐的硬币－14枚　－　把1硬币当做钱来看，2块的硬币数量是1块的2倍，金额上实际是4倍，所以70除5得14,　14个1块的，28个2块的

130 pcs of pies

Chocolates - 12　chocolates - 刚看完题12和9就跳出来，因为108可以被9整除。该怎么解？

72　steps - 9 steps 是1/8的steps,所以得72

4 towels and 3 deckchairs or 1 towel and 8 deckchairs- towels的钱数是整数，60c乘3或8尾数都是8，

Luisa had 57pencils

2021 - father比son大31岁，62岁时是儿子2倍，也就是20年后，2021年

狼姥姥

放完假继续更新。

狼姥姥

QQMYLOVE 发表于 2012-5-31 23:53
这个是这些日子看到的最有意思的贴了。。不用方程式算，LIKE　IT！
PS　已抄下来供全家娱乐。。。

即然喜欢，就参与进来答题吧。