Related Clues:

• Common face card value
• A bit less than a dozen
• Basis of the decimal system
• Famous Downing Street address
• David Cameron's house number
• High end of many a scale
• "Speed" of many bikes
• Scientific notation figure
• Yards for a first down
• Perfection, to a gymnast
• Top of many rating scales
• Striped blue ball
• Word after Big or top
• Eli Manning, on the field
• A Hamilton