How do I multiply a number (e.g., 10) by another (e.g., 3) multiple times?

Question

How do I multiply one number by another multiple times?

For example, how would I multiply $10$ by $3$, one-hundred times?

Answer 1

I think you mean $$ 10 \times 3 \times 3 \times \cdots \times 3 $$ where there are $100$ threes.

That's just $$ 10 \times 3^{100} . $$

Many calculators will do that for you. You can type

10 * 3^100

in the Google search bar and get an answer in scientific notation.

The exact answer will have about 50 digits. There are computer programs that will find it for you.

Answer 2

If you mean multiply $10$ by $3$ one-hundred times, the result will be $10\cdot$ $3^{100}$. The exact result is $5153775207320113310364611297656212727021075220010$, a 49-digit number. (I got this off of Wolfram-Alpha).

Otherwise, if you meant doing $10\cdot3$ one-hundred times, you will write the expression "$10\cdot3$" one-hundred times.