(32+840)÷4*5
=(32+840)*1/4 *5
=32* 5/4+840* 5/4
=8*5+210*5
=40+1050
=1090
(32+840)/4 x5
=(8+120)x5
=40+600
=640
以上就是简便计算过程。
解:原式=(32+840)×1/4×5
=(32×1/4+840×1/4)×5
=(8+210)×5
=8×5+210×5
=40+1050
=1090