Distance around an object

relationship between two quantities, normally expressed as the quotient of one divided by the other:

A ratio that compares two quantities measured in different units

The bottom number in a fraction

Of any counting number are the results of multiplying that continues number by all the counting numbers. Ex: 7: 7,14, 21,28....

Average

Middle # when put in high to low order, or the average of the 2 middle #'s

Most common number

Natural numbers ( counting numbers) and zero; 0, 1, 2, 3...

All rational and irrational numbers

Add all digits and are then divisible by 3

the last digit of a number is even

the last number is a 5 or 0