What the opposite of back?

What is the product of the sum of 8 and 5? What is the GCF of 405 and 486? What equals 20? What is standard form 9x9x9x9? What is greater 002 or 020? What two numbers multiply to 23? What does .45 mean about diamonds? What is 35 percent off of 200 dollars? X plus 2y equals 11 3x-4y equals -17? What is one tenth of eighty? When you add a number that has a remainder of 1 when it is divided by 3 to a number that has a remainder of 2 when it is divided by 3 then what is the remainder of the sum when you divide it by 3? What is 50 oz in a mixed fraction? What is 12.78 rounded to the nearest dollar? What does to be in over one's head mean? What are the odds of rolling a small straight 12345 with five dice with the rules of yahtzee? What is the least number of children who may be arranged in rows of 12 16 or 18 student? Can 0 be the solution of an equation? How do you write forty five billion eight hundred thirty million three thousand twenty two? What is 2.555 repeating as a fraction? 50 meter cube is equivalent to how many liters?