31.4*3.6+43.9*6.4
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31.4*3.6+43.9*6.4
31.4*3.6+43.9*6.4
31.4*3.6+43.9*6.4
31.4*3.6+43.9*6.4
=31.4*(1-6.4)+43.9*6.4
=31.4-31.4*6.4+43.9*6.4
=31.4+(43.9-31.4)*6.4
=31.4+12.5*6.4
=31.4+80
=111.4
31.4*3.6+43.9*6.4
简便运算:3.6*31.4+43.9*6.4
3.6*31.4+43.9*6.4怎样简便运算
3.6*31.4+43.9*6.4简便运算
3.6×31.4 +43.9×6.4的简便算法
一道简便计算 3.6*31.4+43.9*6.4
0.75*15+4.5*2.5 3.6*31.4+43.9*6.4 简便计算
哪个人会简便计算?3.6×31.4+43.9×6.4
3.6乘31.4+43.9乘6.4=?(一定是简便计算)
0.75×15+4.5×2.5 3.6×31.4+43.9×6.4 的简便运算
3.6*3.14+43.9*6.4 简便运算
简便运算,快1.2007 2.3.6*31.4+43.9*6.4————*772008
请帮忙算几道简便运算题3.6×31.4+43.9×6.441.2×8.1+5.37×19+1.1×92.5
3.6×31.4+43.9×6.4巧算已知9.4[A-(1.54-0.31)]=0.47 A=?小强参加了4次数学测验,平均分是68,他想在下次测验后,将5次的平均成绩提高到70分以上,那么,下次测验,他至少要得多少分?歌手大赛上6名评委给一
速算题3题238÷238 238/23941 1/3*3/4+51 1/4*4/5+61 1/5*56-5/63.6*31.4+43.9*6.4
3.6+6.4-3.6+6.4怎么简便运算
5.48×3.6+6.4
3.6*31又2/5+43.9*6又2/5