1. Which number is divisible by 2, 3, and 5? A. 3100 B. 945 C. 1230 D. 2052 Hint 2. Choose the false statement. A. No odd numbers are divisible by 4. B. Since 10 = 2 × 5, a number divisible by 10 is also divisible by 2 and by 5. C. If a number is divisible by 2 then it is divisible by 4 because 4 = 2 × 2. D. All multiples of 9 are divisible by 3 because 9 = 3 × 3. Hint 3. Evaluate the expression 4n + m2 if m = 6 and n = 8. A. 68 B. 88 C. 44 D. 40 Hint 4. Find y for y = x2 - 15 if x = 6. A. 51 B. 21 C. 49 D. -3 Hint 5. Find the greatest common factor of 168 and 288. A. 2 B. 36 C. 24 D. 48 Hint 6. What is the greatest common factor of 18mn2, 54m4, and 80n3? A. 18m2n3 B. 2mn2 C. 9mn D. 2 Hint 7. Simplify A. B. 2ab2 C. D. Hint 8. Express 7-3 using positive exponents. A. (-7)3 B. C. D. Hint 9. Write in standard form. A. 3.57682 B. 0.357682 C. 3,576,820 D. 357,682 Hint 10. The diameter of a volcanic particle averaged 0.000022 meter. What is this measure written in scientific notation? A. 2.2 × 105 B. 0.22 × 10-4 C. 2.2 × 10 D. 2.2 × 10-5 Hint 11. Write the prime factorization of 756. A. 22 · 33 · 7 B. 2 · 35 · 7 C. 22 · 3 · 63 D. 23 · 33 · 7 Hint 12. Factor 50x4y. A. 2 · 5 · 5 · x · x · x · x · y B. 2 · 5 · 5 · x · x · x · y C. 2 · 52 · x2 · x2 · y D. 2 · 52 · x4 · y Hint 13. Four inches is what part of 1 yard? Write you answer as a fraction in simplest form. A. B. C. D. Hint 14. Which fraction is written in simplest form? A. B. C. Already simplified D. Hint 15. Find A. 102 B. 112 C. 12 D. 1012 Hint 16. Write the expression m-7 using a positive exponent. A. B. -m7 C. m7 D. Hint