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%3.14x32.2+6.28x(",1)用简便方法算

-3.14x35.2+6.28x(-23.3)-1.57x36.4 =-3.14x35.2+3.14x(-46.6)-3.14x18.2 =-3.14x(35.2+46.6+18.2) =-3.14x100 =-314

3.14x6.28+3.72x3.14 =3.14x(6.28+3.72) =3.14x10 =31.4 , 你好,本题已解答,如果满意 请点右下角“采纳答案”。

提取公因数3.14,则原式变为 3.14X[-35.2+2X(-23.3)-0.5X36.4] =3.14X[-35.2-46.6-18.2] =3.14X(-100) =-314

(-3.14)x 35.2 + 6.28 x (-23.3) - 1.57 x 36.4 =-(3.14 x 35.2+3.14 x 2 x 23.3+3.14 x 0.5 x36.6) 提公因子3.14 原式=-3.14x(35.2+46.6+18.2) =-3.14 x 100 =-314

原式 = 3.14*35.2 + 3.14*(-46.6)-3.14*18.2 =3.14*(35.2-46.6-18.2) =3.14*(-29.6) = -92.944 。

6.28÷1/3÷(3.14×9) =6.28×3/(3.14×9) =2/3

(3.14*r^2)*2=6.28 6.28*r^2=6.28 r^2=1 r=1

(-3.14)╳35.2+6.28╳(-23.3)一1.57╳36.4如何简便算法进行计算 (-3.14)╳35.2+6.28╳(-23.3)一1.57╳36.4 =-1.57*(35.2*2+23.3*4+36.4) =-1.57*200 =-314

[(3÷6.28)×(3÷6.28)×3.14×2]÷[(2÷6.28)×(2÷6.28)×3.14×1] [去掉小括号] =(3÷6.28×3÷6.28×3.14×2)÷(2÷6.28×2÷6.28×3.14×1) [再去掉括号] =3÷6.28×3÷6.28×3.14×2÷2×6.28÷2×6.28÷3.14÷1 [把6.28和3.14分别消掉] =3×3×2÷2÷2÷1 =4.5

一3.14x35.2十6.28x(-23.3)-1.57x36.4 =一3.14x35.2十3.14x(-46.6)-3.14x18.2 =一3.14x(35.2十46.6+18.2) =一3.14x100 =一314 -1又1/2×5/7-(-5/7)×2又1/2+(-5/2) ×1/7 =-1又1/2×5/7-(-5/7)×2又1/2+(-1/2) ×5/7 =(-1又1/2+2又1/...

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