ANSWER:
A. 4 x 154
B. 400 + 200 + 16 = 616
STEP-BY-STEP EXPLANATION:
If we look at the figures, we see that there are 4 equal figures.
Each figure is divided by 100 squares, then 5 columns of 10 squares each joined, that is, 50 and finally there are 4 squares.
That is to say, per figure they would be 154 and being 4 figures they would be 154 * 4 squares.
Now, if we add only by similar figures it would be:
4x100 + 4x50 + 4x4
Which would be equal to:
400 + 200 + 16 = 616
