Math 221 C
Discrete Mathematics for Computer Science
Fall 1999

Problems and Exercises

Notation: 	n	manditory problem


		{n} 	optional problem


		(n)	helper problem


		[n]	ungraded problem


Bracketed problems do not have to be turned in.


HW	Sec	Prob	Description/Notes
==	===	====	=================

	5.1 	9	number line diagrams
		12,13	absolute value
		14,15	colored counters

	5.2 	1abcd	colored counter diagrams for addition/subtraction
		3abcd	number line diagrams for addition/subtraction
		(6),7,8	temperature problems
		(9),10	finance problems
		23	numbers in circles
		24	commutative law for subtraction

	5.3	4	equivalent equations
		12,13ab	patterns in multiplicaiton

	7.1	2,3bd	fraction-decimal conversions
		4abcd	repeating decimals -> fractions
		6ab	what order? 

	7.2	1ab,	add/subtract decimals
		2	mult/divide decimals
		3	estimate and check (explain estimation)
		5	scientific notation
		17-20	story problems with decimals


	7.3	1	ratios in a class
		3ab	solving proportions
		6,9	story problems
		17	best value
		19	boys and girls in class
		23	pizza prices
		24 	mpg

	7.4	1abd	ratios -> percents
		2	decimal -> percent
		3ac	percent -> fraction
		4bef	percent of something
		[5,6]	mental math
		8	40% of men, 30% of women 
		9	false advertizing?
		13	sales and profits
		14	what order?
		16	mutal funds with commission
		19	investment values (compound interest)

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