三年级的数学怎么回答?

今晚的数学题:

How can you use the digits 6 and 4 to decide if 64 is the pruduct of 9 and 7?

不知道这道题是考什么,9和7的PRUDUCT不是63吗?和64有什么关系?

所有跟帖: 

If 64 or any number is a multiple of 9, the digits will sum to a -Lily3- 给 Lily3 发送悄悄话 Lily3 的博客首页 (145 bytes) () 11/19/2012 postreply 17:42:18

Or you can say that any multiple of 9 can be divided by 3. -2544- 给 2544 发送悄悄话 (0 bytes) () 11/19/2012 postreply 17:57:34

回复:三年级的数学怎么回答? -calligraphy- 给 calligraphy 发送悄悄话 (142 bytes) () 11/19/2012 postreply 17:44:24

Because 6+4 not= 9. -粮油- 给 粮油 发送悄悄话 粮油 的博客首页 (77 bytes) () 11/19/2012 postreply 18:23:27

请您先登陆,再发跟帖!