简算:(9991*1999.1999+9991.9991*1999)/2.0002=
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简算:(9991*1999.1999+9991.9991*1999)/2.0002=简算:(9991*1999.1999+9991.9991*1999)/2.0002=简算:(9991*1999.19
简算:(9991*1999.1999+9991.9991*1999)/2.0002=
简算:(9991*1999.1999+9991.9991*1999)/2.0002=
简算:(9991*1999.1999+9991.9991*1999)/2.0002=
(9991*1999.1999+9991.9991*1999)/2.0002
=(9991*1999*1.0001+9991*1.0001*1999)/2.0002
=1.0001(9991*1999+9991*1999)/2.0002
=1.0001*2*9991*1999/2.0002
=9991*1999
=19972009
设9991=a,1999=b则原式=(a×1.0001b+1.0001a×b)÷2.0002=(1.0001ab+1.0001ab)÷2.0002=2.0002ab÷2.0002=ab=9991×1999=19972009
简算:(9991*1999.1999+9991.9991*1999)/2.0002=
(9991×1999.1999+9991.9991×1999)÷2.0002
求文档:(9991*1999.1999+1999*9991.9991)/2.0002(9991×1999.1999+1999×9991.9991)÷2.0002
(9991*1999.1999+9991.9991*1999)/2.0002 尽量简算
(9991乘1999.1999+9991.9991乘1999)除以2.0002要简便
(9991*1999.1999+999.999.1*1999)/2.00021.56*1 4/9+8.56*7 5/9+8.562.最大是的负整数是什么?
小学→这题怎么简算(9991×1999.1999+9991.9991×1999)÷2.0002
帮忙解一道算数题好吗?(9991×1999.1999+9991.9991×1999)÷2.0002
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