Verified Answer :

  1. three hundred thousanths


    2.add 8 (8+) to the sum of (x+y) 23 and 10 (23+10) so basically 8+(23+10)


    3. we remember that pemdas so parenthasees first
     add 6.78 and 2.54 to get 9.42
     then 34-(9.42)=34-9.42= 24.38


    3. 7-(4/5 times 1/3)
    pemdas
    remember that (x/y) times (z/t)=(xz)/(yt) so 4/5 times 1/3=(4 times 1)/(5 times 3)=4/15
    7-(4/15)
    7-4/15
    6 and 11/15