How many millennium in 10 decade?

Answer 1

1 decade = 10 years

⇒ 10 decades = 10 x 10 years = 100 years

1000 years = 1 millennium

⇒ 10 decades = 100 years

= 100 ÷ 1000 millennium

= 1/10 millennium

= 0.1 millennium