  The 5-point tensors have the property that after insertion of the metric
tensor $g^{\mu \nu}$ in terms of external momenta, all $g^{\mu
\nu}$-contributions in the tensor decomposition cancel. If furthermore the
tensors are contracted with external momenta, the inverse 5-point Gram
determinant $()_5$ cancels automatically. If the remaining 4-point sub-Gram
determinant ${s\choose s}_5$ is not small then this approach appears to be
particularly efficient in numerical calculations. We also indicate how to deal
with small ${s\choose s}_5$. Explicit formulae for tensors of degree 2 and 3
are given for large and small (sub-) Gram determinants.
