1. The document contains exercises about rational and irrational numbers, including classifying different types of numbers, representing them on a number line, calculating errors from rounding, and proving properties of triangles and the golden ratio. 2. Several exercises involve classifying numbers as rational or irrational, finding upper bounds for absolute and relative errors, and representing numbers on the real number line. 3. One multi-part exercise asks to prove properties about similar triangles, the golden ratio, and using similar triangles to solve for the value of the golden ratio.