Question

3.8XO.9+0.38能简便吗？

Answer 1

=3.8*0.9+0.38
=0.38*10*0.9+0.38
=0.38*9+0.38
=（9+1）*0.38
=10*0.38
=3.8
希望可以帮助到你 想办法弄到共因素

Answer 2

3.8x0.9+0.38
=0.38x9+0.38x1
=0.38x(9+1)
=0.38x10
=3.8