Is a milligram customary or metric?

What are the five categories that My Plate is divided into? What is a partial responder? What is the associtive proerty? What are some kinds of measurements and their uses? What term is used to describe standardized tests that compare an individual child's score to the average score of others her age? What is the equation used to calculate period? How do you write 7 over 8 as a decimal? If you divided negative seven by negative ten what does it equal? What are non recurring numbers? What does separable into equal parts mean? What is 1050 equal to in min? What was the original sticker price of a 1973 Winnebago Brave? Can you answer these math questions? What is 27 over 441 in simplest form? What is 3.22 into a mix number? What do elfs look like? How many gallons of water are in a 4 ft x 2 ft x 1 ft tank? What are the factors of 4 that add up to 1? What is a set of equations in the same variables? How does the clock make life easier?