How to multiply 90 by itself 9 times

How to multiply 90 by itself 9 times. In other words, what is 90 multiplied by itself 9 times?

To multiply 90 by itself 9 times is the same as 90 to the power of 9 (90^9) or ninety to the ninth power. Specifically, 90 is the base and 9 is the exponent like this:

90⁹

90⁹ is 90 multiplied by itself 9 times which is 90 × 90 × 90 × 90 × 90 × 90 × 90 × 90 × 90.

Here is how we calculate it:

90
90 × 90 = 8100
8100 × 90 = 729000
729000 × 90 = 65610000
65610000 × 90 = 5904900000
5904900000 × 90 = 531441000000
531441000000 × 90 = 47829690000000
47829690000000 × 90 = 4304672100000000
4304672100000000 × 90 = 387420489000000000

That is it! Now you know how to multiply 90 by itself 9 times.

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