Question

how do you write 31 in scientific notation?
× 10

Explanation:

Step1: Recall scientific - notation form

Scientific notation is $a\times10^{n}$, where $1\leq a < 10$ and $n$ is an integer.

Step2: Rewrite 31

For 31, we can write it as $3.1\times10^{1}$ since $31 = 3.1\times10$.

Answer:

$3.1\times10^{1}$