Walnut Hill School for the Arts Math Algebra 1 Placement Test . 1. Which of the following is an irrational number? A. -5 . B. 2. 3. C. 4. D. 5. 2. Which group of numbers is ordered from least to greatest? 4 − −. A. , 0.9, 3 B. −3, − 0.9, 5 5. 3. Evaluate (6 − 4) ÷ 2 + 8 ÷ (4 − 2) +1. 4. C. −0.9, , − 4 3 D. , − 3, − 0.9.