This math topic practices how to apply the formula for the sum of the first N natural numbers, \(\frac{n(n+1)}{2}\), and relate it to actual addition sequences. It involves recognizing which series of consecutive integers is correctly represented by a specific usage of the formula in various items. Each question presents equations that expedite the summing process of an integer series, helping students to connect abstract formulas to concrete number sequences, reinforcing skills in number patterning and building foundational algebraic understanding.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.