Answer:
62.5%
Explanation:
What percentage of 8 cm is 5 mm?
The formula for finding the answer is p*8=5 because in these kinds of problems if the percentage is missing, it turns to p, is turns to an = sign, and the word of changes to a multiplication sign.
Now you just do the opposite, so instead of times 8, it's divided by 8, and whatever happens to one side, the same happens to the other side, so 5 divided 8 equals 0.625. So p equals 0.625 and to convert that decimal to a percent, you move the decimal point over two spaces to the left, and the answer becomes 62.5%.
So 62.5% of 8 cm is 5 mm.