The goal of kindergarten math curriculum is to prepare children for first grade math:
~ To count by rote at least to 20, but preferably a little beyond.
~ The concepts of equality, more, and less.
~ To count backwards from 10 to 0.
~ To recognize numbers.
~ To be able to write numbers.
~ To recognize basic shapes.
~ To understand up, down, under, near, on the side, etc. (basic directions).
~ To understand the concepts of addition and subtraction with small numbers.
~ Expose the student to two-digit numbers.
Subtracting fractions is similar to adding fractions. Most of the work involves the denominator. If the denominators of the two fractions are already the same, much of the work is done. Simply subtract the two numerators to get the answer fraction using the same denominator, and then reduce and make a proper fraction.