1、16589432916584329除以25的余数?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/24 15:29:32
1、16589432916584329除以25的余数?
1、16589432916584329除以25的余数?
1、16589432916584329除以25的余数?
1、
2005×0.375—0.375×1949+3.75×2.4
=200.5*3.75-3.75*194.9+3.75*2.4
=3.75*(200.5-194.9+2.4)
=3.75*8
=30
2、
(123456789.1×123456789.1)—123456789×123456789.2
=(123456789.1×123456789.1)—(123456789.1-0.1)×(123456789.1+0.1)
=(123456789.1×123456789.1)—(123456789.1×123456789.1)+0.1
=0.1
3、
47263.4×47263.4+47263.5×47263.5-47263.3×47263.5-47263.4×47263.6
=(47263.4×47263.4-47263.3×47263.5)+(47263.5×47263.5-47263.4×47263.6)
=(47263.4×47263.4-(47263.4-0.1)×(47263.4+0.1))+(47263.5×47263.5-(47263.5-0.1)×(47263.5+0.1))
=0.1+0.1
=0.2
4、
1.1+3.3+5.5+7.7+9.9+11.11+13.13+15.15+17.17+19.19
=(1.1+9.9)+(3.3+7.7)+5.5+(11.11+19.19)+(13.13+17.17)+15.15
=5.5*2+5.5*2+5.5+15.15*2+15.15*2+15.15
=5.5*5+15.15*5
=(5.5+15.15)*5
=20.65*5
=103.25
16589432916584329除以25的余数与29除以25的余数相同
所以16589432916584329除以25的余数是4
16589432916584300+29
因为100整除25 所以16589432916584300整除25 那么 29/25余数是4
16589432916584329÷25=(16589432916584300+29)÷25则16589432916584329能整除 余数为0,后面不能整除,余数为4,答案就是4了。
或者16589432916584329=16589432916584325+4,显然余数就是4了