The first step a math tutor would suggest is to understand what it means when a number has an exponent. The “power” of a number indicates how many times the base would be multiplied by itself to reach the correct value.
The second step is to write the number in the base-exponent form, and lastly calculate what the final result would be. Consider the example of 2 to the power of 4: in exponent form that would be
So re-applying these steps to our particular problem, we first convert our word problem to a base-exponent form of:
To simplify this, all that is needed is to multiply it out:
31 x 31 x 31 x 31 x ... (for a total of 99 times) = 4413749583537565032476932990387411346167271613890555109335495524222485458980983618043735976906256037950045112531693572303994207228316556664287051871
Therefore, 31 to the power of 99 is 4413749583537565032476932990387411346167271613890555109335495524222485458980983618043735976906256037950045112531693572303994207228316556664287051871.