How many marks out of 80 to get a level 6?

When did December last have 5 sat and 5 sun and 5 mon? What instrument measures the length of a leaf? How many minutes are in 1 and 1 fourths of an hour? Convert 1500 C to F? How do you write one hundred thousand billion in standard form? Half of a number is 18 more than 5 times the number find the number? What fraction is equivalent to 1.84? How will you describe radian measure? If my birthday is 2-4-03 how old am I in the year of 2014? What is the antonym for separate? What 350 as a percent? How much time does it take for a bird flying at a speed of 45 miles per hour to travel a distance? How do you write 6 hundred 1 million 1 hundred 2 thousand forty in standard form? When values are in conflict how would decide which ones take precedence? What is six hundred times twenty dollars? Inthe diagram 153 and 27 are tangent to O what is the measure of DGF? The room measures 16' on each side How many square feet of tile are needed to cover the room? What is the largest 4 digit numeral from 3729? Why is 20 to the power of 0 is equal to 1? What are relativley prime numbers?