What is the rule 13-1?

What is a comparison of two numbers using division? How many parallel faces are there in a Icosahedron? How many pints equals 40 fl oz? What is a 24 radius? Duplicate triplicate What about 20 times? How many pennies are in 0.112 US dollar? Which is more 81 pints or 10 gallons? Does a parallelogram have four parallel sides? What are 3 equivalent fractions for 0.50? How does the toll booth know you have put the exact amount of change in? How do you write 3.1 as a mixed number? Why do you use division to solve a multiplication problem and why do you use multiplication to solve a division problem? What is K in the right large reaction rate equals K a MB and? When did the designation of bishop first occur in the Christian Church? What does it mean when you always find pennies? What circles have their centers on the y-axis? How do you mesure the volume of regular and irregular shaped objects? What was scientific notation first used for? What is the decimal 1.46 as a percent? What is the origin of the word cent?