跪地急求小学数学五年级上下册网络版教科书或者关于数的整除,像:约数,倍数,质数,合数一类的.

http://www.***.com/Soft/suxue/si/200502/129.htm
http://huangh.tianxinedu.com/a/Article/xiazai/jiaoanxiaz/shuxue/200511/298.html
http://www.***.net/Software/Catalog26/128.html
http://www.***.net/Soft/41/202/2006/2006010525384.asp
http://www.***.com/jazx/ja/xx/xx/
http://220.169.58.26/huanglong/gekejiaoan.html
http://zhynxx.nease.net/