Those numbers which are either negative or positive are known as signed numbers. Similarly signed fractions have positive or negative sign in numerator. They are classified into two types. They are: positive signed fractions and negative signed fractions. For instance, -3/5 and -5/4 are negative signed fractions. While 3/2 and 4/6 are positive signed fractions. We can easily subtract or add signed fractions.
Grade 7
Signed Number Operations
7.NS.A.1.D