Activity 5: Match Me! Let's Find Out: What is the principal root of a number? Let's Use These Materials: Mathematics notebook and ballpen Let's Do it This Way: 1. Observe the given radical expressions in column A. 2. Choose the corresponding principal root of each item in co 3. Copy and write the answer in your Mathematics notebook you. Column A 1. √484- 2. √64 3. √-216 4. √256 5. √-16 6.-27 Column B A. +4 B. +22 C. Undefined D. - 3 E. -6 F. +8 G. -8