For the first question, the answer is:
F. Overlap the rows of pictures to see the top two combine to fill an entire 9-block set. Combine the last row to see a center block is needed.
For the second question, the answer (I think) is:
A. The first and third pictures and fourth and sixth pictures are reflection across the xy axis. The seventh has an xy axis reflection as choice A.
For #3, The answer is:
-5. The top row digit sum equals the sum of the digits below. 9 equals 6+1+2. 3+8 = 3+5+2+1. 4+7=4+2+2+3. 4=(-5)+2+7
For #5, The answer is a similar trick:
17. The number below and between each row pair is the sum of their digits. 8+8+6+3=25. 2+5+9=16. 1+6+2+4=13. 1+3+4+9=17. To complete, 1+7+1+0=9.
For #4, the answer is:
H. The top row has all letters with horizontal symmetry (flipped across y axis), and the bottom row has letters with vertical symmetry (flipped across x axis). H is the only letter option that will fit both.