The first part of the math benchmark “Numbers and Operations in Base Ten” deals with the numbers from 11 to 19, and the beginnings of place value. Basically, you need to understand that a 1 is not just a one, but rather a ten, and that the number one is not the same as the number ten. For example, 700 is not a minus sign, but it is a whole number, and 700/100 is not a minus sign.