Question

the distance from earth to the sun is 148,080,569 kilometers. write an estimation in scientific notation for the distance from earth to the sun. about ______ kilometers

Explanation:

Step1: Round the number

Round 148080569 to 150000000.

Step2: Write in scientific - notation

Scientific notation is of the form $a\times10^{n}$, where $1\leq a<10$ and $n$ is an integer. For 150000000, $a = 1.5$ and $n = 8$ (since we moved the decimal point 8 places to the left). So, $150000000=1.5\times 10^{8}$.

Answer:

$1.5\times 10^{8}$