What is lesser 600dm or 6m?

What is a measurment in th US system of measurment? Can 300 over 399 be simplified? How do you get a coin graded? What math terms can help figure out which latin words mean many and one Plzzzzz help Thx? How far does a tractor travel in 1 turn if the tire is 6 ft across? What are 3 consecutive integers that add to 78? What is 4x9x50? How do you find the measure of a fourth angle on a quadrilateral? How do you write 1700 in words? For which value of x is the equation 2(1 plus x) x plus 3 true? Is -34 both rational and irrational? Indicate the scale of measure for each value on the y-axis? When finding a confidence interval for true mean spent of all citizens should you us a z-score or t-score? How do you place numbers in a 3 by 3 square to get 15 in each row? Does a car measure miles or killometers? How do you multiply 3.5 times 5? What is the GCF and LCM of 32 and 44? Which fraction is greater 3 fifths or 5 twelves? Does the Bible really say God won't put more on you than you can handle? Is pre algebra useful?