there are 10 year in one decade so 10 times 10 is 100 ..... hope i helped
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Oh, dude, 90 years is like 9 decades. It's simple math, you know, just divide 90 by 10 because each decade is 10 years. So, yeah, 9 decades. Math can be fun, right?
Ten thousands pennies equal what
Ten There are ten years in a decade.
50000
From the year 1820 to 1890, there are seven decades. A decade is a period of ten years, so counting from 1820 to 1830 is one decade, 1830 to 1840 is the second decade, and so on until 1890. In total, that makes seven decades in the given time frame.