How do you cancel 67?

What is 76 roundest to the nearest whole number? How do you write 31? How many hours it 21 million minutes? Is 1000 lbs greater than or less than or equal to 440kg? What numerical summary cannot be negative? How many vertices do hexagons have? What squared number is a multiple of 3 other than 9? How many quarters equal 300 dollars? How many inches in 16fts? What is direct routing term? How many even numbers less than 600 can be made from the digits 34567 with each only being used once? What are roman numerals used for? Is 4 5 equivalent to 0.8? What is 500 divided by 199 with remainder? What is the difference between the largest 3 digit numbers? How many diagonals are in a 4 sided figure? How many one fourth circles equal a half circle? How many square rods are there in a square mile? What percentage is 27 out of 31? Is bacillus subtilis catalase positive or negative?