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4.25*5.24*1.52*2.51简便算法!

4.25*4=17 4.25*5.24*1.52*2.51=(4.25*4)*1.31*1.52*2.51=17*1.31*1.52*2.51=84.964504

4.25×5.24×1.52×2.51 =4×(0.25+0.24+0.52+0.51) =4×0.25+4×0.24+4×0.52+4×0.51 =1+0.96+2.08+2.04 =6.08

看到25想到4,所以可以这么简便: (4+0.25)x5.24+0.152x(25+0.1)=4x5.24+5.24/4+0.152x100/4+0.152x0.1=20.96+1.31+3.8+0.0152=26.0852

4.25x5.24+1.52x2.51=22.27+3.8152=26.0852

25.64-5.6-24.4+5.36 =(25.64+5.36)-(5.6+24.4) =31-30 =1

原式 =4.25x166-4.25x142+24x5.75 =4.25x(166-142)+24x5.75 =4.25x24+24x5.75 =(4.25+5.75)x24 =10x24 =240

(5/24-4/25)×25×24 =5/24×24×25-4/25×25×24 =5×25-4×24 =125-96 =29

4/5×24+4/5 =4/5×24+4/5×1 =4/5×(24+1) 公式:a×b+a×c=a×(b+c) =4/5×25 =20 希望能帮到你!

25×16-15×24 =5*5*4*4-5*3*4*6 =5*4*(5*4-3*6) =20*(20-18) =20*2 =40

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