Question

1972×37+197.2×1.9-986×70.38怎么简算？

Answer 1

972×37+197.2×1.9-986×70.38=1972×37+1972×0.19-986××2×70.37÷2=1972×3 7+1972×2.19-1972×35.19=1972×（37+0.19~35.19）=1972×（37-35）=1972×2-3944，希望采用，谢谢~~

Answer 2

1972×37+197.2×1.9-986×70.38
=1972×37+1972×0.19-1972×35.19
=1972×（37+0.19-35.19）
=1972×2
=3944

Answer 3

1972x37+197.2x1.9一986x70.38
=1972x37+1972x0.19+1972ⅹ
35.19
=1972x(37+0.19一35.19)
=1972x2
=3944。

Answer 4

972×37+197.2×1.9-986×70.38=1972×37+1972×0.19-986××2×70.37÷2=1972×3 7+1972×2.19-1972×35.19=1972×（37+0.19~35.19）=1972×（37-35）=1972×2-3944，希望采用，谢谢~~

Answer 5

对给定的公式进行适当变形，最后应用乘法分配率进行计算。 1972 197.29-970.38 =1972ⅹ371972ⅹ0.19-986ⅹ2x35.19= 1972x（37 0.19）-1972x35.19 = 1972x（37.19-35.19）（37.19-35.19） 9-986x70.38 =1972x37 1972x0.19-1972x35.19 =1972x(37 0.19-35.19)=1972x2 =3944 1972*37 197.2*1.9-986*70.38-19 =1972*2 =3944 7.2*4.5*9。 (1.8*1.5*3.1)=4*3*3 =36 12.6*7.6*2.32/1.9/1.4/2.9 =12.6*7.6*2.32/(1.9*1.4* 2.9