Question

0.56×3.2+5.6×0.48+56×0.02用简便方法做

Answer 1

原式=5.6Xo.32+5.6 X0.48+5.6 X0.2
=5.6X(0.32+0.48+0.2)
=5.6X1
=5.6

Answer 2

=0.56(3.2 4.8 2)
=0.56×10
=5.6