Related Clues:

• Metric-system base
• A decade
• ___-four (bit of CB slang)
• Pin near the gutter
• Top score, or half a score
• Wee child
• 'Big' number in college athletics
• Yellow "Monopoly" bill
• Two fivers
• "Down for the count" number
• X, numerically
• "... a ___ o'clock scholar"
• Olympics ideal
• Gymnast's top score
• The number at left + 1