Question

14.8*6.3+46.5*4.5+8.3*3.7+0.465*550-6.3*6.5的简便运算法?

Answer 1

14.8*6.3+46.5*4.5+8.3*3.7+0.465*550-6.3*6.5

=（14.8-6.5）*6.3+46.5*4.5+8.3*3.7+0.465*550

=8.3*6.3+46.5*4.5+8.3*3.7+0.465*550

=8.3*（6.3+3.7）+46.5*4.5+0.465*550

=8.3*10+46.5*(4.5+5.5)

=(8.3+46.5)*10

=54.8*10

=548