Question

(78.6-0.786*25+75%*21.4)/15*2011

这是小学奥数，要简算的过程

Answer 1

(78.6-0.786*25+75%*21.4)/15*2011
=（78.6-78.6x0.25+0.75x21.4）÷15x2011
=[78.6x(1-0.25)+0.75x21.4]÷15x2011
=(78.6x0.75+0.75x21.4)÷15x2011
=0.75x(78.6+21.4)÷15x2011
=0.75x100÷15x2011
=5x2011
=10055

Answer 2

(78.6-0.786*25+75%*21.4)/15*2011

=(78.6-78.6*0.25+0.75*21.4)/15*2011
=(78.6×0.75+0.75*21.4)/15*2011
=（78.6+21.4）×0.75/15*2011
=100×0.75/15*2011
=75/15*2011
=5/2011

Answer 3

(78.6-0.786*25+75%*21.4)/15*2011=【78.6×（1-0.25）+21.4（1-0.25）】/15×2011
=（78.6-78.6×0.25+21.4-21.4×0.25）/15×2011=【（78.6+21.4）（1-0.25）】/15×2011
=（0.75×100）/15×2011=5×2011=10055

Answer 4

10055