Math final project
March 9, 2015
Presented by:
Bolívar Taveras
Prof. Liudmila Rikun
GE-184

1.Signed numbers
Solve the following
1) (-6)+(-1)
A. -7
B. -5 substracted instead of adding.
C. 7 answer is not positive 7
D. 5 substracted and used wrong sign.

2) -3+7
A. -4 wrong symbol
B. 4 correct answer
C. -10 added instead of substracting
D. 10 added instead of substracting

3) -6.4+3.9
A. -2.5 correct answer
B. 4.1 wrong quantity
C. 2.5 positive instead of negative
D. -4.1 wrong quantity

4) 5-7
A. 12 added instead of substracting
B. 2 wrong symbol
C. -12 added instead of substracting
D. -2 correct answer

5) (-2)-(-6)
A. -8 added the numbers
B. 4 correct answer
C. -4 wrong symbol
D. 8 added the numbers

2.Fractions

Solve the following problems.

1) 3/4 + 5/6
A. 8/10 just added the denominator and numerator
B. 21/12 wrong adding
C. 8/12 wrong adding
D. 19/12 correct answer
2) 2/8 + 5/6
A. 7/14 just added the denominator and numerator
B. 7/24 wrong adding
C. 23/24 wrong adding
D. 13/12 correct answer

3) 3/8 + 5/16
A. ½ added wronh
B. 11/16 correct answer
C. 8/16 just added numerators
D. 13/16 added wrong

4) 9/15 + 5/20
A. 17/20 added wrong
B. 14/60 just added denominators
C. 14/35 added numerator and denominator
D. 15/20 correct answer

5) 2/7 + 1/14
A. 3/14 just added numerator and left common denominator
B. 4/14 added wrong
C. 5/14 correct answer
D. 3/21 wrong common denominator and just added numerators

3.Proportions, ratios and percent

Solve the following

1) 5/6 = x/30
A. X=36 miltiplied wrong
B. X=26 multiplied wrong
C. X=.03 did not follow right procedure
D. X=25 correct answer

2) Solve the proportion 3/6 = x/24
A. X=13 wrong answer
B. X=0.02 wrong procedure
C. X=48 wrong procedure
D. X=12 correct answer

3) What is 15% of 200?
A. 50 wrong answer
B. 300 did not move decimal point correctly
C. 3 did not move decimal point correctly
D. 30 correct answer

4) Determine 26% of 300
A. 780 wrong answer
B. 7.8 decimal point on wrong place
C. 78 correct answer
D. .78 decimal point on wrong place

5) at a high school the ratio of boys to girls is 8:9 if 374 students attend the high school how many of them are boys?
A. 198 this would be correct for girls
B. 167 wrong answer
C. 176 correct answer
D. 8/17