  This paper presents a comparative study three numerical schemes such as
Linear, Quadratic and Quadratic-Linear scheme for the fractional
integro-differential equations defined in terms of the Caputo fractional
derivatives. The error estimates of the respective approximations are also
established. Numerical tests of the discussed schemes show that all schemes
work well, and when the number of terms approximating the solution are
increased, the desired solution is achieved. The accuracy of the numerical
schemes with respect to the step size h is analyzed and illustrated through
various tables. Finally, comparative performances of the schemes are discussed.
