number 1=6
number 2=9
number 3= top box is 9 and bottom is 6
number 4= My answer is reasonable because on the periodic table beryllium's atomic number is 6 which is equal to the number of protons in the atom and beryllium-9's mass is stated in its name.
number 19= 16 for all of the bottom ones and 32 for the top first one and 33 for the top second and 34 for the top last
dont know the rest sorry
