How to multiply 90 by itself 4 times

How to multiply 90 by itself 4 times. In other words, what is 90 multiplied by itself 4 times?

To multiply 90 by itself 4 times is the same as 90 to the power of 4 (90^4) or ninety to the fourth power. Specifically, 90 is the base and 4 is the exponent like this:

90⁴

90⁴ is 90 multiplied by itself 4 times which is 90 × 90 × 90 × 90.

Here is how we calculate it:

90
90 × 90 = 8100
8100 × 90 = 729000
729000 × 90 = 65610000

That is it! Now you know how to multiply 90 by itself 4 times.

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