Relacionar Columnas five point examVersión en línea the explain function in ecxel in a match activity por Juan Esteban Triviño 1 The most used functions in Excel are the functions that count and sum. You can count and sum based on one criteria or multiple criteria. 2 3 Excel has many functions to offer when it comes to manipulating text strings. 4 Learn how to use Excel's logical functions such as the IF, AND, OR and NOT function. 5 This chapter illustrates three functions to round numbers in Excel. The ROUND, ROUNDUP and ROUNDDOWN function. Count and Sum text Logical Lookup & Reference Round