FIRST YEAR MATH OLYMPIAD March 25, 2000 Answer sheet

1

ANSWERS

Number Sense

Problem	Answer
1	$182.21 (subtract 1 point for $182.20)
2	21
3	13
4	1/2 point for each entry. % sign is not necessary. Fraction which is not reduced is wrong. x .4 40% 23/25 x 92% 9/50 .18 x x .6 60%
5	In order: 1/4 .26 .3 3/8 .38 (no partial credit)

Measurement

Problem	Answer
1	86,400
2	260 (units not necessary)
3	9
4	$4.80 or 480 cents
5	16

Geometrical Sense

All answers must have correct units! Subtract one point for each answer that has incorrect of missing units.

Problem	Answer
1	Area = 167 sq cm Perimeter = 60 cm
2	Area = any number between 1017.36 sq ft and 1017.8760 sq ft Perimeter = any number between 113.04 ft and 113.09733 ft
3	Any answer between 545.04 sq ft and 545.09733 sq ft
4	120^o or 120 degrees
5	Any number between 3.8125 sq in and 3.8175 sq in

Probability and Statistics

Problem	Answer
1	4/36 or 2/18 or 1/9
2	11/221 or 132/2652
3	1/6 or 2/12
4	Mean = 22 Mode = 15 Median = 18 Range = 33
5	49/325

Algebraic sense

Problem	Answer
1	18
2	6
3	12
4	17 (no penalty for mentioning the number of pigs)
5	77