MATH 212 Study Guide - Midterm Guide: Prime Triplet
10 Jan 2019
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Let (cid:1866)(cid:3404)9(cid:3400)5(cid:2871)(cid:3400)11(cid:2870): list three prime factors of n, list 3 composite factors of n, give the prime factorization of (cid:1866)(cid:2871). Suppose that a number is divisible by 5 and also divisible by 6. Explain why or why not using the prime factorization. Use the number line below to justify how you rounded above. Be sure to select appropriate place values for the longer tick marks so that your number line shows your reasoning in part a. Include a brief explanation of how your number line shows why your rounding is correct. Consider the collection of base blocks shown at right: a. Suppose that these are base 10 blocks and 1 whole is represented by 1 flat. What number do the blocks represent? flat b. Now suppose that the blocks are base 5 blocks, where 1 whole is one unit. The collection is not a correct base 5 representation. Give the answer in both base five and base ten.
