Query 1, this give me Qty = 55

SELECT        SUM(NumberOfCards) AS Qty, CardFormat
FROM            dbo.tbl_Cards
WHERE        (DateAdded BETWEEN CONVERT(DATETIME, '2014-07-06 11:50:00', 102) AND CONVERT(DATETIME, '2014-07-06 12:05:00', 102)) AND (IsFetched = 1) AND (Duplicate = 0)
GROUP BY CardFormat


Query 2, this give me Qty 56 (QtyPaidCards + QtyFreeCards)

	SELECT CardFormat, 

	CONVERT(VarChar, DATEADD(dd,DATEDIFF(dd,0,DateAdded),0),102) AS Dag,

		ISNULL(SUM(CASE WHEN NULLIF(TransactionID, '0') IS NOT NULL THEN NumberOfCards END), 0)AS QtyPaidCards,
		ISNULL(SUM(CASE WHEN TransactionID IN ('0', '') THEN NumberOfCards END), 0) AS QtyFreeCards
	FROM tbl_Cards
	WHERE IsFetched = 1 AND Duplicate = 0
	AND (DateAdded BETWEEN CONVERT(DATETIME, '2014-07-06 11:50:00', 102) AND CONVERT(DATETIME, '2014-07-06 12:05:00', 102))
	AND CardFormat = 'A5'

	GROUP BY CardFormat, DATEADD(dd,DATEDIFF(dd,0,DateAdded),0)
	ORDER BY DATEADD(dd,DATEDIFF(dd,0,DateAdded),0), CardFormat

SUM(CASE WHEN TransactionID > '0' THEN 0 ELSE NumberOfCards END) AS QtyFreeCards