Question

0.8*46+3.5*8+9.1*2简算

Answer 1

0.8*46+3.5*8+9.1*2

=8*4.6+3.5*8+9.1*2

=8*(4.6+3.5)+9.1*2

=8*8.1+(8.1+1)*2

=8*8.1+8.1*2+2

=(8+2)*8.1+2

=10*8.1+2

=81+2

=83