How many blood cells are there in 1cm cubed of blood?

What does 4x 2-3x 5-2(x 5)? Why do you need to take a b-1 vitiam? What is the difference between cubefield games 1 and 2? How do you find the sides of a right triangle whose hypotenuse is 19.5 with a perimeter of 45 and an area of 67.5 square cm? How much is 450 a month for 80 months? What comes after decuplicate? What 3 digit number when added together is equal to the product of digits? What is a pictograph used for? These became more than ten when Jesse signed them with a pen? What are the factors 1 - 200? What is two equivalent fractions for 636? Is 221 greater than or less than or equal to 336? How many mm are in 1dm? What is 3.1M? How do you takeaway fractions? What is 2436 rounded to the nearest hundred? Who invented quoit? What letter grade is 28 out of 40? Is standard notation scientific notation? What is 1994 in roman numbers?