77乘以99用简便方法怎么计算
77*99的简便计算方法 -
77X99 =77X（100-1）77X100-77X1 =7700-77 =7623
77乘以99用简便方法怎么计算=77×（100-1）77×100-77 =7700-77 =7623
77X99 =77X（100-1）77X100-77X1 =7700-77 =7623
77乘以99用简便方法怎么计算=77×（100-1）77×100-77 =7700-77 =7623
77×99 =77×﹙100-1﹚=7700-77 =7623 有不明白的地方再问哟，祝你学习进步，更上一层楼！(*^__^*)
=77*(100-1)=77*100-77*1 =7700-77=7623
77×99用最简单的方法怎么做 -
把99变成100-1
25X（40+4）25X40+25X4=1000+100=1100 77X99=77X(100-1)=7700-77=7623
简便运算:12.5*(8-0.8). 2.7*4.3+5.7*2.7. 0..77*99. 6.18*9.9+0.618...
=12.5*8-12.5*0.8 =100-10 =90 2.7*4.3+5.7*2.7 =2.7*（4.3+5.7）2.7*10 =27 0.77*99 =0.77*100-0.77 =77-0.77 =76.23 6.18*9.9+0.618 =0.618*99+0.618 =0.618*（99+1）0.618*100 =61.8 0.25*1.25*0.8*40 =（0.25*40）（1.25*0等我继续说。.
99×77=7623 竖式计算，如下图，
简便计算:99×7 77×9 33×18 -
99×7 =（100-1）×7 =700-7 =693 77×9 =11×7×9 =99×7 =（100-1）×7 =700-7 =693 33×18 =3×11×3×6 =99×6 =（100-1）×6 =600-6 =594 99×7+77×9+33×18 =99×7+99×7+99×6 =（100-1）（7+7+6）20×（100-1）2000-20 =1980 还有呢？
变成77×99-99×1 再运用乘法分配律变成99×（77-1）再进行乘法运算，