How do you identify significant figures in a given value?

What is the simplest form for 3 over 8? What ten nations are spoken of in the book of revelations? Can a translation make a figure smaller or larger? What are two equivalent fractions for five sixth? How many credits do you need to graduate with a doctoral degree? What is value free position? What is 6.8 million in scientific notation? How much is 250 ml in mm? What is Roman Numeral mcmxix? 40 grams equals how many milligrams? How do you find the perpendicular height for an oblique triangle? What is 2.9 times 2? How many acute angles does a pentagon have? What are the greatest common factors of 18 and 42? How do you do cube root of 256? 643.82 rounded off whats the answer? If two players are dealt a five card hand each from same deck of cards what is the probability that they both end up with hands identical in terms of numerical values of cards they hold ignoring suit? What is 49 divided by 3762? What does flip across the dotted line mean? What does 475.53-67.37 equal?