Plz i'm so lost i can't figure out the answer

Question 1:
Just multiply 4 by 8, which is 32, then add it to 8 which equals 39.

 So the answer for question one is .

Question 2:
Since 4 is a whole number, you don't have to really worry about it. You will then do 7 ÷ 8, which equals 0.875. That's when you will bring back the 4, which will make your final answer 4.875.

Question 3: 
Since  is closer to a whole number, just round it to 1, add it to the 4, and you'll get 5. 

Then take the 5, and multiply it by 4 which = 20. So 20 yd of fabric's enough.

Hope this helped :)

Idon’t know actually i’m in 5th grade and don’t know