原式=(25x4)x(125x8) =100x1000 =100000
简棚仔便计唤此算链链汪125×4/25×8=(125÷25)×4×8=5×4×8=20×8=160
=25x4x125x4=1OOx1OOO=1OOOOO
125X4/25X8=(100÷25+25÷25)X4X8=(4+1)X2X16=160
125x4+25x8=125×8÷2+25×4×2=1000÷2+100×2=500+200=700