Civil Service Exam Reviewer · Basic Operations · hard

Evaluate: (−3)³ − (−2)² + 2

1. 25
2. -29
3. -21
4. -33

Answer

B. -29

Solution

(−3)³ = −27 (odd power keeps the sign); (−2)² = 4. −27 − 4 + 2 = -29.

More Basic Operations questions

1. Multiply: (3 × 103) × (5 × 105). Express in scientific notation.
2. Find √0.6724
3. Evaluate: 55 × 53 ÷ 52
4. Which of the following fractions is the SMALLEST: 6/11, 9/13, 1/3, 1/4?
5. Which of the following fractions is the LARGEST: 1/11, 8/13, 3/7, 2/9?
6. Express 0.6777… (only the 7 repeats) as a fraction in lowest terms.
7. Express the repeating decimal 0.858585… as a fraction in lowest terms.
8. Express 1.1875 as a fraction in lowest terms.
9. Evaluate: 35 − [44 − (4 × 9 − 24)] ÷ 4
10. Two school bells ring every 8 and 12 minutes, respectively. If they ring together at 6:00 AM, when will they next ring together?

All Basic Operations questions