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32*46+32*54简算

=32×(46+54) =32×100 =3200

(46+54)×32 =100×32=3200

278*46+78*54 =200*46+78*46+78*54 =9200+78*(46+54) =9200+78*100 =9200+7800 =17000

32.54-(10.46+4.54)

46×54+46×33+46×13简算 =46x(54+33+13) =46x100 =4600

的简便计算 46x32+54x32 =(46+54)×32 =100×32 =3200

39×46+39×54 =39×(46+54) =39×100 =3900

第一项和第三项相加显然是100,因此这样计算: 46+32+54 =46+54+32 =100+32 =132

1,74(46+54-1)=74*(100-1)=7400-74=7326 2,480*55+550*52=550*48+550*52=550(48+52)=550*100=55000

从题中看,每相邻两个数的差都是4,所以可以按照等差数列的求和公式求出这道题的答案。 10+14+18+22+26+30+34+38+42+46+50+54 =(10+54)×12÷2 =64×12÷2 =768÷2 =384

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