怎样简便就怎样计算38×56+38×45-38地等试

Question

怎样简便就怎样计算38×56+38×45-38地等试

Answer 1

上述=38*（56+45-1）=3800

Answer 2

38×56+38×45-38
=38×(56+45-1)
=38x100
=3800

Answer 3

56+45-1=100
38*100=3800