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1.2x2.5+0.8x2.5的简便算法是什么?

1.2x2.5+0.8x2.5 =(1.2+0.8)x2.5 =2x2.5 =5

1.2x2.5+0.8x2.5 =(1.2+0.8)x2.5 =2x2.5 =5

原式=(1.2+0.8)×2.5 =2×2.5 =5

=2.5*(1.2+0.8) =2.5*2 =5

1.2x2.5+0.8x2.8 =1.2x2.5+0.8x2.5+0.8x0.3 =(1.2+0.8)x2.5+0.8x0.3 =2x2.5+0.8x0.3 =5+0.24 =5.24

原式 =(1.2+0.8)x2.5 =2x2.5 =5 供参考。

=(1.2+0.8)×2.5) =2×2.5 =5

1.5x105 =1.5×(100+5) =150+7.5 =157.5 2.33x0.5x4 =2.33×2 =4.66 1.2x2.5+0.8x2.5 =0.3×4×2.5+0.2×4×2.5 =0.3×10+0.2×10 =3+2 =5

原式 =2.5*(1.2+0.8) =5 希望能帮到你,请采纳正确答案. 你的点赞或采纳是我继续帮助其他人的动力

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