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8.5 5.61x2.3怎样简算?

8.5+5.61X2.3 =8.5+5.61X2+5.61X0.3 =8.5+11.22+1.683 =8.5+12.903 =21.403

5.6×1.1×2.3=5.6×(1+0.1)×2.3=(5.6+0.56)×2.3=14.168

x÷3.6=2.5 x=2.5*3.6 x=9 4.98-2.3x=1.3 2.3 x=4.98-1.3 x=3.68÷2.3 x=1.6 5.6x-x=8.28 4.6x=8.28 x=8.28÷4.6 x=1.8 4(x-0.8)=9 x-0.8=9÷4 x-0.8=2.25 x=1.45

(3.64一5.696/8.9x1.2)x0.05 =(3.64-0.64x1.2)x0.05 =(3.64-0.768)x0.05 =2.872x0.05 =0.1436 (请采纳)

1,12.5x1.2 =12.5x4x0.3 =50x0.3 =15 2,11.1x66.6+33.3x77.8 =33.3x(11.1x2+77.8) =33.3x(22.2+77.8) =33.3x100 =3330 3,9.9x5.6+0.56 =99x0.56+0.56 =(99+1)x0.56 =100x0.56 =56

5.6x7.3+5.6x1.7+5.6 =5.6x(7.3+1.7+1) =5.6x10 =56 【乘法分配律】 愿对你有所帮助!

=(3.2+5.6+1.2)x0.5=5

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