(4998+350)/14+18怎样简便计算?(4998+350)除14+18怎样简便计算

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(4998+350)/14+18怎样简便计算?(4998+350)除14+18怎样简便计算
(4998+350)/14+18怎样简便计算?
(4998+350)除14+18怎样简便计算

(4998+350)/14+18怎样简便计算?(4998+350)除14+18怎样简便计算
(5000+350-2)/14+18
=(5000+350)14-1/7+18
=400.5

原式=(5000-2+350)/2/7+18
=(2500-1+275)/7+18*7/7
=(2500+274+126)/7
=2900/7

(4998+350)/14+18
=4998/14+350/14+18
=357+25+18
=375+25
=400

(5000+350-2)/14+18
=(5000+350)14-1/7+18
=400.5