FIRST YEAR MATH OLYMPIAD March 25, 2000

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.

FRACTION	DECIMAL	PERCENT
2/5	.4	40%
23/25	.92	92%
9/50	.18	18%
9/15	.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	30^o or 30 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