2 list matching

i have 2 lists:

LIST 1
A1 B1
sku1 4.50
sku2 5.00
sku3 6.50
sku4 2.25
sku5 1.25


need to enter/match these B1 values into a similar, but not identical list in the b1 column

LIST 2
A1 B1
sku1 <no value>
sku3 <no value>
sku5 <no value>


so LIST 2 ends up looking like this:
sku1 4.50
sku3 6.50
sku5 1.25




any help?

thanks
pete