39乘99加39简便计算

唐高砌4260用简便方法计算99X39十39怎么算 -
饶魏空13438012357 ______ 39X(99+1)=39X100=3900

唐高砌426039加99乘三九用简便方法算 -
饶魏空13438012357 ______[答案] 39加99乘三九 =39x(1+99) =39x100 =3900

唐高砌426099*39+39= (递等式简便计算) -
饶魏空13438012357 ______[答案] 99*39+39 = (99+1)*39 =100*39 =3900

唐高砌426099乘39加39怎样简算
饶魏空13438012357 ______ 99x39+39x1----39x(99+10)

唐高砌426039*99+99怎么简便计算 -
饶魏空13438012357 ______ 39*100+99-39 =3900+60 =3960

唐高砌426099乘 39加39简便运算 -
饶魏空13438012357 ______ 100乘以39减39加39得3900

唐高砌426039乘以99减去39利用简便运算怎么做? -
饶魏空13438012357 ______[答案] 39*99-39 =39*(99- 1) =39*98 =39*(100-2) =39*100-39*2 =3900-78 =3822

唐高砌426039=39x99的简便算法 -
饶魏空13438012357 ______ 39x99=(40-1)x(100-1)=40x100-100-40+1=4000-140+1=3861

唐高砌426039乘99+99怎么简便运算 -
饶魏空13438012357 ______ 99x40-99+99或者39x100-39+99

唐高砌426039+39乘九简便计算 -
饶魏空13438012357 ______ 39+39乘九简便计算算式怎么39+39乘九=39*(1+9)=39*10=390