搜搜做题作业网72×0.18+10.4
来源：学生作业帮助网 编辑：作业帮 时间：2024/06/17 03:25:58
10.4-9.6×0.35=10.4-(10-0.4)×0.35=10.4-(10×0.35-0.4×0.35)=10.4-(3.5-0.14)=10.4-3.36=7.04
0.45*72+45*0.18+4.5=0.45*72+0.45*0.18*100+0.45*10=0.45*72+0.45*18+0.45*10=0.45*(72+18+10)=0.45*100=4
我我再答：1.521再问：竖式再答：哦再答：马上再答：求采纳再问：快再答：哦再问：快再答：
72×0.81+10.4=7.2×8.1+10.4=7.2×8+7.2×0.1+10.4=57.6+0.72+10.4=68+0.72=68.72以上回答你满意么?
72×0.81+10.4=7.2×8.1+10.4=7.2×8+7.2×0.1+10.4=57.6+0.72+10.4=68+0.72=68.72
/>72*81+10.4=72*(80+1)+10.4=72*80+72+10.4=5660+82.4=5842.4
72*0.9*0.9+10.4再问：列递式再答：0.8*0.9*0.9*0.9+0.8*13=（0.9*0.9*0.9+13）*0.8=（0.072+13）*0.8再问：不对再答：哦哦0.8*90*0
10.4-(10-0.4)×0.5
=0.1111*7*1·04-0.1111*0.28=0.1111*7·28－0.1111*0.28=0.1111*（7·28－0.28）=0.1111*7=0.7777
9.6乘10.4=（10-0.4）x（10+0.4）=10x10-0.4x0.4=100-0.16=99.84
0.45*72+45*0.18+45=45*0.72+45*0.18+1*45=45*（0.72+*0.18+1）=45*1.9=45*（2-0.1）=45*2-45*0.1=90-4.5=85.5
72*0.81+10.4=72*(0.8+0.01)+10.4=57.6+0.72+10.4=57.6+10.4+0.72=68+0.72=68.72
0.18保留两位小数72÷1.1凑整到十分位0.1865.45递等式计算,能简便就简便,不能就不用7.3×0.099=7.3*0.1-7.3*0.001=0.73-0.0073=0.7227解方程：8
超时了.1.08/(4.5*0.2)=1.08/0.9=1.22.81*0.18/0.9=2.81*(0.18/0.9)=2.81*0.2=0.562
先不要看小数,看成是18X18X36,最后再将结果的小数点向左移动5位.18的平方应该是可以记下来的,等于324,然后就手算吧.说老实话,我也没有特别好的简便算法.就是小数太多,不方便带着算,所以先拿
(4-7)*(2-10)((4*7)/2)+10(4*(7/2))+10((4-2)*7)+10(4/(2/7))+10((4/2)*7)+104*(2*(10-7))(4*2)*(10-7)4*((