What are the grades 1 through 12 called?

What do you call a fraction with the same denomanator? What is 2p - 9 equals 5p plus 12? What is 15 percent of 5.50? What is 10 subtracted by 6? What is even or odd? How many students were in one class? Safe hiding places on the Underground Railroad? What is another word to show steps? How many inches is 125 cm? What is a preconceived opinion that is formed without a rational basis or with insufficient knowledge? How do you turn 0.24 as a fraction? What are the prime numbers between 401-500? How do you convert five and three eighths into a decimal? How do you find the distance from a point to a line? What were the names of the 2 roman brothers that founded the Roman Empire? Put your 9 dots and only 4 lines? Can you be employed at 15? Is Nathaniel a girl or a boys name? Why is it important to create pictorial and physical models before trying to solve an equation? How many significant figures will there be in the answer to the following problem You do not have to solve the problem 532.1 x 101?