PLEASE HELP ME I NEED THIS DONE ASAP NO LINKS !!!

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.