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

120o 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