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WVDE Math 4 OA Gain Familiarity with Factors and Multiples Test 1 1. Is 1 x 2 x 5 x 9 a prime factorization of 90? A Yes, because the product of 1, 2, 5, 9 is 90. B Yes, because 1, 2, 5, and 9 are prime numbers. C No, because 1, 2, 5, and 9 are not all prime numbers. D No, because the product of 1, 2, 5, and 9 is not 90. 2. Which of the following factor pairs is made up of two composite numbers? A 1 and 24 B 2 and 12 C 3 and 8 D 4 and 6 3. What is the prime factorization of 60? 2 4. What is the prime factorization of 99? 5. What is the prime factorization of 48? 6. What is the prime factorization of 50? 7. Shayna wants to share a certain number of pictures that can be divided evenly between 3 or 9 friends. Which of these describes the number of pictures Shayna can share so that the total number of pictures will be divided evenly among 3 or 9 friends? A 123 pictures because 1 + 2 + 3 = 6 and 6 is divisible by 3 B 135 pictures because 1 + 3 + 5 = 9 and 9 is divisible by 3 and 9 C 451 pictures because the number begins with 45 which is divisible by 3 and 9 D 109 pictures because the number ends with 9 which is divisible by 3 and 9 3 8. Look at the models below. These models can be used to show that 8 is a _____________. A prime number B composite number C square number D decimal number 4