How many 10s are in 498?

What is smaller than a mm? What is the scientific notation of 10 trillion? Can you list the prime numbers between 40 and 50? What is 90 percent 490? What is fallacy n types? What is a word that means division? Why it works to break apart a number by place values to multiply? How many vaars in 1 sq vaar? Does a cone a cylinder and a sphere have any vertices? How do you get the square footage of a driveway that is 17' x 31' How do you do the calculation? How do you solve a two step inequality? What is 10 divided by the square root of 5 im aware that it would be 10 square root of 5 divided by 5 but how do i simplify it? How do you write 1206718? How old are you if your born in 1997? How do you pass big seed level 6 puzzle 4 on st math? Which number is greater -11 or -2? What number comes next in the sequence 1 6-36-240-1960 with solution? How long does it take to run 42200 meters? What is the title of this picture D20 pizzazz? What are the steps for integer multiplication in booth algorithm?