刚算了下题,10多年没有碰过数学了,还好这个基本的还是会解,以后还能教下宝宝,我真担心解不出来啊
cindyppz 发表于 2012-5-21 10:49
其实你说的guess and check是属于小学problem solving非常常见的一种strategy. 虽然方法有些笨,不过有利 ...
tasselack2011 发表于 2012-5-22 11:31
看这个火车问题,1/2和1/4的重量差336,这336就是1/4的报纸重量,装满就是336*4=1344.
火车重量1426-336=1 ...
aucklandlady 发表于 2012-5-23 12:54
Uma has cubes that come in two different sizes. She makes a stack of 7 small cubes and a stack of 5 ...
love_3_month 发表于 2012-5-30 09:50
A group of friends shared 108 chocolates equally, the number of chocolates each friend got was three ...
love_3_month 发表于 2012-5-31 07:30
马大姐is walking up a set of stairs. She stops when she is 5/8 way through. Then she walked another ...
月明 发表于 2012-5-30 22:49
请问你小孩是在哪个校区读书?因为我小孩上六年级了,从来没有带回来这种程度的数学题,难道不同学校的教 ...
狼姥姥 发表于 2012-6-10 22:43
10-06-12
When added together three whole numbers give a total of 10.When multiplied together the sa ...
狼姥姥 发表于 2012-6-11 22:18
The average of four numbers is 11.If 6,a fifth number is added to the four numbers,what is the avera ...
狼姥姥 发表于 2012-6-12 21:53
A transistor radio company can only package it's radios in boxes of 6 and boxes 8.what is the least ...
狼姥姥 发表于 2012-6-17 19:14
17-06-12
Tennis balls are usually sold in a shop at three for four dollars. If the price is changed ...
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