This chapter is dedicated to examples of some general sums and how they can be represented as closed formulas.

- Proposition: Sum of Consecutive Natural Numbers
- Proposition: Sum of Consecutive Odd Numbers
- Proposition: Sum of Squares
- Proposition: Sum of Cube Numbers
- Proposition: Geometric Sum
- Proposition: Sum of Geometric Progression
- Proposition: Sum of Arithmetic Progression
- Proposition: Alternating Sum of Binomial Coefficients
- Proposition: Sum of Cosines
- Proposition: Sum of Binomial Coefficients
- Proposition: Sum of Binomial Coefficients I
- Proposition: Sum of Binomial Coefficients II
- Proposition: Sum of Binomial Coefficients III
- Proposition: Sum of Binomial Coefficients IV
- Proposition: Sum of Factorials (I)