U of M
MATH 1051 -
Worksheet
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Math 1051, Summer 2007, Worksheet 11. Determine if the following numbers are prime (a) 39 (b) 253 (c) 89 (d)1001 (e) 24312. Find the prime factorizations, LCMs, and GCDs of the following pairsof numbers (a) 2 and 4 (b) 11 and 13 (c) 85 and 147 (d) 90 and 729 (e) 137and 513. Compute the following additions and subtractions: (a)23+53(b)13+12(c)59−12(d)98+67124(e)15332−564. Compute the following multiplications and divisions: (a)25∗52(b)23÷53(c)20345∗12105(d)35104÷58(e)34∗
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