SELECT top 10
 (total_logical_reads/execution_count) logical_reads,
 (total_logical_writes/execution_count) logical_writes,
 (total_physical_reads/execution_count) physical_reads,
 Execution_count,
 (SELECT [text] FROM sys.dm_exec_sql_text (sql_handle)) query_text,
 (SELECT query_plan FROM sys.dm_exec_query_plan (plan_handle)) query_plan
FROM sys.dm_exec_query_stats 
ORDER BY (total_logical_reads + total_logical_writes) Desc