hi I am almost to 500 points for the 5 dollar xbox game card on bing rewards and wanted to know something if I add the card to my xbox and I get a 3 dollar one to does it add both so I could buy a game that cost 8 dollars or do I have to use the 5 dollar one and then the 3 dollar one 
:help::help::help::help::help:
It’s just like money in the bank, your pocket, or your wallet. What you have in total is what you can spend.
ok but one more thing when I go to buy something does it ask me for my card or would it just use the money I put on it from the game card
You redeem the card codes on your 360 and it adds the dollar amount to your available balance.
ok ty 
They add the money together, because when I changed my gamertag I only have $5 in Xbox currency. Then I added my PayPal account and they took the extra $5 from the PayPal account and just added them together to make $10 so it was enough for the gamertag change.