Matching Pairs five point examOnline version the explain function in ecxel in a match activity by Juan Esteban Triviño 1 Learn how to use Excel's logical functions such as the IF, AND, OR and NOT function. 2 This chapter illustrates three functions to round numbers in Excel. The ROUND, ROUNDUP and ROUNDDOWN function. 3 4 Excel has many functions to offer when it comes to manipulating text strings. 5 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. Round Count and Sum text Logical Lookup & Reference