简算7777×9+111×377777×9+111×37(要简算哦)
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简算7777×9+111×377777×9+111×37(要简算哦)
简算7777×9+111×37
7777×9+111×37(要简算哦)
简算7777×9+111×377777×9+111×37(要简算哦)
7777×9+111×37
=7777(10-1)+111(30+7)
=77770-7777+3330+777
=77770+3330-7000
=70770+3330
=71100