999+999+1999巧算

云昌耍2324四年级下册999乘999加1999,怎么做.怎么做简便运算? -
钭匡冰17322015852 ______ 999*999+1999 =999*999+999+1000 =999*(999+1)+1000 =999*1000+1000 =1000*(999+1) =1000*1000 =1000000

云昌耍2324999*999+1999=?简便方法,计算过程及规律
钭匡冰17322015852 ______ 1999+999*999 =1000+999+999*999 =1000+(999+1)*999 =1000+1000*999 =1000+999000 =1000000

云昌耍2324999乘999加1999用简便法. -
钭匡冰17322015852 ______[答案] 999x1000-999+1999=999000+1000=1000000

云昌耍2324999乘以999加1999怎样算简便 -
钭匡冰17322015852 ______ 1999+999X999=1000+999+999X999=1000+999X(1+999)=1000+999X1000=1000+999000=1000000

云昌耍2324999*999+1999=? -
钭匡冰17322015852 ______ 999*999+1999=(1000-1)*(1000-1)+2000-1=1000000-1000-1000+1+2000-1=1000000

云昌耍2324数学题999*1999+999 -
钭匡冰17322015852 ______ 999*1999+999=999*(1999+1)=999*2000=1998000

云昌耍2324999*999+1999怎么简算 -
钭匡冰17322015852 ______ 999*999+1999 =999(999+1)+1000 =1000*999+1000 =1000(999+1) =1000*1000 =1000000

云昌耍2324999*999+1999怎么用简便算 -
钭匡冰17322015852 ______ =999*(1000-1)+1999 =(999*1000)+(1999-999) =999000+1000 =1000000

云昌耍2324999*999+1999怎么简便计算
钭匡冰17322015852 ______ 999*999+999+1000 =999*(999+1)+1000 =999000+1000 =1000000

云昌耍2324999*1999+999用简便方法计算 -
钭匡冰17322015852 ______ 999*1999+999=999*(1999+1)=999*2000=1998000