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306x24简便计算列脱式计算.

74x14+111x24 =74x14+111x(10+14) =14x(74+111)+111x10 =14x185+111x10 =2590+1110 =3700

125x30x24 =125x30x(8*3) =125*8*3*30 =1000*90 =90000

10又11/12x24等于脱式计算 10又11/12x24 =24*(10+11/12) =24*10+24*11/12 =240+22 =262

41600÷128x24 =325×24 =7800

=387(24+75+1) =387*100 =38700

=728-(34+600) =728-(28+6+600) =728-28-6-600 =700-600-6 =100-6 =94

原式=576÷12一15X24÷12 =48一15X2 =48一30 =18

136+295+(30+6)x(30-6)=136+295+30²-6²=136+295+900-36=1295 希望可以帮到你,望采纳

(17X28-400)X24 =(17X30-17X2-400)X24 =(510-400-34)X24 =(110-40+6)X24 =76X24 =80X24-4X24 =1920-96 =1920-100+4 =1824

0.9x24.5-0.9x4.5 =0.9*(24.5-4.5) =0.9*20 =18

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