My little brother is in 3rd grade and his doing fractions on which is less equal to and more than but i dont know how to teach him (or explain) to him on how to identify them cause he can't use a calculator in school .

Question

anonymous · Answer

might be helpfull? http://answers.yahoo.com/question/index?qid=20080108145324AAynLwc

anonymous · Answer

thanks

anonymous · Answer

no problem..

anonymous · Answer

He doesnt know about common factors yet heres an example of his work 2 7over8 , 1 7over12 , 2 3over 4

anonymous · Answer

http://www.mathsteacher.com.au/year7/ch03_prime/05_comm/fac.htm

anonymous · Answer

So now you should teach him what the Common denominator is:
7/8  + 17/ 12  + 23/ 4 
Since 4, 8 and 12 all have the same factor 4:
7/ (2 * 4) + 17/ (4 * 3)  + 23/ 4 
Now multiply:
7 * 3  + 17 * 2 + 23 * 6
All three now have the same denominator 24

anonymous · Answer

Can you explain to him now?

anonymous · Answer

yeah thanks ,