Operations and Algebraic Thinking 4.OA B. Gain familiarity with factors and multiples. 4. Find all factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1-100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite. C. Generate and analyze patterns. 5. Generate a number that follows a given rule. Identify apparent features of the pattern that were not explicit in the rule itself. For example, given the rule "Add 3" and starting number 1, generate terms in the resulting sequence and observe that the terms appear to alternate between odd and even numbers. Explain informally why they numbers will continue to alternate in this way. (Cover art from skill-guru.com)