Civil Service Exam Reviewer · Basic Operations · hard

Evaluate: 33 × 36 ÷ 33

1. 14,348,907
2. 531,441
3. 729
4. 2,187

Answer

C. 729

Solution

Same base: add exponents when multiplying, subtract when dividing: 3(3 + 6 − 3) = 36 = 729.

More Basic Operations questions

1. Which of the following fractions is the SMALLEST: 3/7, 1/5, 2/7, 1/3?
2. Which of the following fractions is the LARGEST: 1/5, 11/12, 5/6, 3/4?
3. Express 0.9666… (only the 6 repeats) as a fraction in lowest terms.
4. Express the repeating decimal 0.363636… as a fraction in lowest terms.
5. Express 0.25 as a fraction in lowest terms.
6. Evaluate: 3 3/4 × 1 2/3 ÷ 1/2
7. Evaluate: 52 − [24 − (8 × 8 − 52)] ÷ 2
8. Two school bells ring every 15 and 20 minutes, respectively. If they ring together at 9:00 AM, when will they next ring together?
9. Evaluate: (−3)³ − (−2)² + 2
10. Multiply: (3 × 103) × (5 × 105). Express in scientific notation.

All Basic Operations questions