Answer:
I think it's A :)
Step-by-step explanation:
Answer:

Step-by-step explanation:
<em>Alternate</em><em> </em>means they are on OPPOSITE sides diagonal from each other, and interiour is self-explanatory, so you can see what the answer is from here.
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Answer:
E stands for the power of ten the number is multiplied by
I thonk
Since 1/2 is equal to a half, you divide 50 and 40 by 2 and you'll get 25 and 20 and then you subtract 25 and 20 and you get 5 which is the answer!
The answer is 300 + 20 + 7 + .40 + .6