1. This document contains a 20 question multiple choice test on concepts related to rational and irrational numbers. Questions cover topics like writing fractions as decimals, identifying rational and irrational numbers, performing operations on radicals, and solving simple equations involving radicals. 2. The test includes questions that ask students to identify the correct way to write fractions as decimals, determine if a number is rational or irrational, calculate values of expressions involving radicals, and select the right solution when solving an equation with radicals. 3. The answers provided are: 1) ง 2) ง 3) ข 4) ข 5) ก 6) ค 7) ง 8) ง 9) ง 10) ง