What is the square of 10?

The square of a number is calculated by multiplying the number by itself. In this case, to find the square of 10, you perform the calculation 10 × 10. This results in 100. Therefore, the correct answer is 100, as it accurately reflects the mathematical operation of squaring the number 10. Understanding how to compute the square of a number is fundamental in mathematics, emphasizing the concept of exponentiation, where squaring a number is simply raising it to the power of 2.