416/32的简便算法
416/32,423+99*423,3100/(31*25)的简便算法怎么做?
416÷32 =(320+96)÷32 =320÷32+96÷32 =10+3 =13 423+99×423 =423×1+99×423 =(1+99)×423 =100×423 =42300 3100÷(31×25) =3100÷31÷25 =100÷25 =4。
416/32,423+99*423,3100/(31*25)的简便算法怎么做? 416/32=(8*52)/(8*4)=52/4=13 423+99*423=1*423+99*423=(1+99)*423=100*423=42300 3100/(31*25)=(31*100)/(31*25)=100/25=4
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