What are the answers to Workbook Plus level 8?

Who many twos in eighty? What measurement unit would you use to measure the length of a television show? What is the prime number of 21 and 40? What do you call a sven sided polygon? How many such digits are there in the number 5314679 each of which is as far away from the beginning of the number as when the digits within the number are rearranged in descending order? What plus what epuals 45? What is 20 dived by 22 in its lowest terms? What happens 6 times a day 4 times a week 2 times a month and once in a year? What is the base measurement of a triangle of a area that is 30m and 10m? What is meant by the statement that the space is three dimensional? How many 8x4 inch blocks will cove 180 square feet? 9 out of 13 in decimal form? What is the answer to this math problem 6 plus 5v equals -19? Double headed quarter? How do safety triangles work? How many times can 8 go in to 504? What is 55 million divided by 3? How much does a million dollars in pennies weigh? Are diamonds traceable through a jeweler? Why was the four corners built?