You got a short version of a very much used grace. Here is the full text:
I Jesu navn
går vi til bords
å spise, drikke på ditt ord.
Deg, Gud til ære, oss til gavn,
Så får vi mat i Jesu navn.
In Jesus' name
We go to the table
To eat and drink at your Word
You, God, to honor, We, to receive,
So we receive food in Jesus' name.
I found the translation on this site: http://www.mindekirken.org/Prayers/bordvers.htm
Some years ago that was the most used Table prayer. We sang it or said it before every meal.
Today in Norway another grace is more common:
Å du som metter liten fugl, velsign vår mat o Gud
Thou who feed the little bird, bless our food, oh God
When we have finished a meal everybody say: "Takk for maten!" to the hostess. ("Thank you for the food")