9
Depending how you read this question it is either 81/100 of 1 which gives 0.81% or it is 81 of 100 which gives 81%.
92 = 81
The tenth of 81 is calculated by dividing 81 by 10. This gives you 8.1. Therefore, the tenth of 81 is 8.1.
One half times 81 is 40.5. This is calculated by multiplying 81 by 0.5, which gives you 40.5.
72 less than 81 is calculated by subtracting 72 from 81. This gives us 81 - 72 = 9. Therefore, 72 less than 81 is 9.
-9 or +9.
4 times 81 = 324
The two answers are -9 and +9.
81 + 16
To determine how many times 53 goes into 81, you divide 81 by 53. This calculation gives approximately 1.53. Therefore, 53 goes into 81 once, with some remainder.
81 raised to the 4th power is calculated as ( 81^4 ). Since ( 81 = 3^4 ), we can rewrite it as ( (3^4)^4 = 3^{16} ). Calculating ( 3^{16} ) gives us 43,046,721. Thus, ( 81^4 = 43,046,721 ).
Nine tenths of ninety is calculated by multiplying 90 by 0.9. This gives you 81. Therefore, nine tenths of ninety is 81.