What is 2/3rd called?

2/3 is called "two-thirds" when spoken (the "rd" in "3rd" refers to ordinal notation, but in fraction form it's simply "two-thirds").

Detailed Explanation:

Proper Names:

• Spoken: "Two-thirds"
• Written fraction: 2/3
• Ordinal reference: "Two-thirds" (not "two-threeth")

Mathematical Classifications:

• Type: Proper fraction
• Value: Approximately 0.6667 (repeating decimal: 0.666...)
• Percentage: 66.67% (approximately 67%)

Common Usage:

• "Two-thirds of students passed the exam"
• "Two-thirds majority" (in voting)
• "Two-thirds cup" (in recipes)

Mathematical Properties:

• Cannot be simplified further (already in lowest terms)
• Decimal repeats: 0.666666...
• Three two-thirds: 2/3 + 2/3 + 2/3 = 6/3 = 2

Real-World Examples:

• 40 minutes of an hour (2/3 × 60 = 40)
• 67 cents of a dollar (approximately)
• Two out of every three items

Important Notes:

• Pronunciation: "two-thirds"
• Common benchmark fraction (about 67%)
• Used frequently in statistics and everyday math