Yes you did the equation on this page correctly.
Answer:
Mostly correct
For Q3, you are doing great, you remembered that negative numbers can happen if the exponent is an odd number.
For Q4, I think you were confused with the fractions,
4(i)

4(ii) is also wrong but I'll let you try to fix it yourself following what I given you for 4(i). You should get 1/64
Hope this helps!
Answer:
3.124 kilometers
Step-by-step explanation:
Is this the whole problem because I don’t see a “g”
Anywhere I’m the problem
5 kilometers = 5000 decimeters if that answers your question sorry ...