Question

Divide (10 × 1017) ÷ (100 × 1013). Express the answer in scientific notation.

Answer 1

You can also look at the problem like

(1x10^1 x 1.017 x 10^3)/(1x10^2 x 1.013x10^3)

Does that first step make sense?

Answer 2

You have not converted everything in tens.
Multiply 1.017 by 1. It's 1.017
Now add the powers

1.017x 10^4/1.103x10^5

Does that make sense?

Answer 3

If the first number is
\[ 10 \times 10^{17} \]
you should write it like this
10 x 10^17
in other words, use the ^ to show the 17 is an exponent. otherwise it just looks like 1017 (one thousand seventeen)