ILTS 305 Math Exam Questions and
Answers16
bivariate data - ANSWERS -Data with two variables, or pairs of numerical observations.
scatter plots - ANSWERS -A graph with points plotted to show a possible relationship between
two sets of data.
box and whisker plot - ANSWERS -A graph that displays the highest and lowest quarters of data
as whiskers, the middle two quarters of the data as a box, and the median
68-95-99.7 rule - ANSWERS -in a normal model, about 68% of values fall within 1 standard
deviation of the mean, about 95% fall within 2 standard deviations of the mean, and about
99.7% fall within 3 standard deviations of the mean
Number - ANSWERS -basic building block
integer - ANSWERS -All whole numbers (both positive and negative) and zero.
prime number - ANSWERS -A whole number that has exactly two factors, 1 and itself.
composite number - ANSWERS -A whole number greater than 1 that has more than two factors.
rational number - ANSWERS -A number that can be written as a fraction
,irrational number - ANSWERS -a number that can NOT be expressed as a ratio of two integers or
as a repeating or terminating decimal - Pi or any square root of an imperfect square are
considered irrational
Number line - ANSWERS -
absolute value - ANSWERS -The distance a number is from zero on a number line
divisor - ANSWERS -The number by which another number is divided.
quotient - ANSWERS -the answer to a division problem
Parenthesis - ANSWERS -
Exponet - ANSWERS -number that represents the number of times the base is used as a factor
root - ANSWERS -a solution of an equation
perfect square - ANSWERS -a square of a whole number
order of operations - ANSWERS -PEMDAS (parenthesis, Exponents, Multiplication, Division,
Addition, Subtraction)
common factor - ANSWERS -Any common factor of two or more numbers.
prime factorization - ANSWERS -a number written as the product of all its prime factors
, GCF (Greatest Common Factor) - ANSWERS -the greatest number that is a factor of two or more
numbers
least common multiple (LCM) - ANSWERS -The smallest multiple (other than zero) that two or
more numbers have in common.
fraction - ANSWERS -part of a whole
numerator - ANSWERS -the top number in a fraction
denominator - ANSWERS -The bottom number in a fraction
equivelent fractions - ANSWERS -when one fraction is equal to another.
common denominator - ANSWERS -A denominator that is the same in two or more fractions.
Adding and Subtracting Fractions - ANSWERS -make denominator same number then add or
subtract across
Multiplying Fractions - ANSWERS -1. Multiply the numerators.
2. Multiply the denominators.
Dividing Fractions - ANSWERS -To divide fractions, invert the second one and multiply
Multiplying mixed numbers - ANSWERS -Change to an improper fraction and multiply; then
change the answer, if in improper form, back to a mixed number and reduce if necessary.
Answers16
bivariate data - ANSWERS -Data with two variables, or pairs of numerical observations.
scatter plots - ANSWERS -A graph with points plotted to show a possible relationship between
two sets of data.
box and whisker plot - ANSWERS -A graph that displays the highest and lowest quarters of data
as whiskers, the middle two quarters of the data as a box, and the median
68-95-99.7 rule - ANSWERS -in a normal model, about 68% of values fall within 1 standard
deviation of the mean, about 95% fall within 2 standard deviations of the mean, and about
99.7% fall within 3 standard deviations of the mean
Number - ANSWERS -basic building block
integer - ANSWERS -All whole numbers (both positive and negative) and zero.
prime number - ANSWERS -A whole number that has exactly two factors, 1 and itself.
composite number - ANSWERS -A whole number greater than 1 that has more than two factors.
rational number - ANSWERS -A number that can be written as a fraction
,irrational number - ANSWERS -a number that can NOT be expressed as a ratio of two integers or
as a repeating or terminating decimal - Pi or any square root of an imperfect square are
considered irrational
Number line - ANSWERS -
absolute value - ANSWERS -The distance a number is from zero on a number line
divisor - ANSWERS -The number by which another number is divided.
quotient - ANSWERS -the answer to a division problem
Parenthesis - ANSWERS -
Exponet - ANSWERS -number that represents the number of times the base is used as a factor
root - ANSWERS -a solution of an equation
perfect square - ANSWERS -a square of a whole number
order of operations - ANSWERS -PEMDAS (parenthesis, Exponents, Multiplication, Division,
Addition, Subtraction)
common factor - ANSWERS -Any common factor of two or more numbers.
prime factorization - ANSWERS -a number written as the product of all its prime factors
, GCF (Greatest Common Factor) - ANSWERS -the greatest number that is a factor of two or more
numbers
least common multiple (LCM) - ANSWERS -The smallest multiple (other than zero) that two or
more numbers have in common.
fraction - ANSWERS -part of a whole
numerator - ANSWERS -the top number in a fraction
denominator - ANSWERS -The bottom number in a fraction
equivelent fractions - ANSWERS -when one fraction is equal to another.
common denominator - ANSWERS -A denominator that is the same in two or more fractions.
Adding and Subtracting Fractions - ANSWERS -make denominator same number then add or
subtract across
Multiplying Fractions - ANSWERS -1. Multiply the numerators.
2. Multiply the denominators.
Dividing Fractions - ANSWERS -To divide fractions, invert the second one and multiply
Multiplying mixed numbers - ANSWERS -Change to an improper fraction and multiply; then
change the answer, if in improper form, back to a mixed number and reduce if necessary.
