Questions 5 and 11
is appreciated

5. 1.5 grams =

We know that 1 kg is 1000 times bigger than the unit in this case, grams
So we move the decimal place to the left 3 time
1.5 -> 0.15 -> 0.015 -> 0.0015

15 gram is 0.0015 kg

11. 3 1/4 q = p

1 quart is 2 pint, so we double 3 1/4

3 1/4 x 2 is 6 2/4 or 6.50 quart

Hope this helps :D

5. There are 1000g in a kilogram. Key term "Kilo", meaing 1000. 
0.00.15kg
11.  
Conversion:  If 1quarter equals 2pints, then 3 1/4qt must be two times that. 

Hope this helps :)