# MATH PRAXIS 1 PPST

 What are negative numbers? The numbers -1, -2, -3, -4, .... What are whole numbers? All positive integers and zero What is zero An integer that is neither positive nor negative What are even numbers? Numbers that are divisible by 2 such as -4, -2, 0, 2, 4, 6, 8, .... What are odd numbers? Integers that are not divisible by 2 such as -3, -1, 1, 3, 5, 7, ...... What are consecutive integers? Integers in sequence such as 3, 4,5, or -1, 0, 1; they can be represented in general as n, n+1, n+2, (where n is any integer) What are real numbers? All numbers, including fractions, decimals, etc; that correspond to points on the number line What is a factor? A divisor of an integer, for example 1, 3, 5, and 15 are factors of 15, but 2 is not a factor of 15. Note that -1, -3, -5 and -15 are also factors of 15. ANY integer can be a factor of zero, but zero is a factor of a nonzero integer. Multiples of an integer n The product of an integer n and another integer; some multiples of 4 are -8, -4, 0, 4, 8, 12, and 16. Note that 2 is a factor of 4 but is not a multiple of 4. Zero is a multiple of any integer. What is a prime number? A positive integer that has exactly 2 diff positive factors; 1 and itself; for example 2,3,5,7, 13 are all prime numbers What is a reciprocal? The inverse of a number, that is; one of a pair of numbers whose product is 1; the reciprocal of 5 is 1/5; the reciprocal of 2/3 is 3/2. What is an exponent? A superscripted number that indicates the number of times to multiply the number by itself for example 34  indicates 3x3x3x3 What is a number squared? A number multiplied by itself such as 52 or 5x5=25 What is a number cubed? A number multiple 3 times by itself such as 53 is 5x5x5=125 What is the square root of a number? A positive number that when squared produces the given number. The square root of a number n is square root of n. The square root of square root sign then 2 is 1.4. What is a fraction? A number in the form a/b, where number "a" is called the numerator and "b" is the denominator. If the numerator is larger than the denominator, it is an improper fraction. What is an integer? Integers consist of counting numbers and the negative of the counting numbers such as -4, -3, -2, -1, 0, 1,2, 3, 4, 5, etc. What do number properties include? knowledge of factors and multiples, primes and divisibility, even and odd numbers, and properties of zero and one what do operation properties include? knowledge of the commutative, associative and distributive principles What does computation include? finding the solution to applied problems, determining information needed, and interpreting and adjusting results of computations Define variable.. A letter, such as x or n, that is used to represent an unknown quantity Define equation A statement of equality between two algebraic expressions; for example, 2n-4=10 is a linear equation Define sequence an ordered list of numbers, for example 2, 5, 8, and 11, . . . , Note that in this example the first term is 2 and that each term after the first is 3 greater than the preceding term. Define counterexample an example that would contradict and example or a claim strategies for word problems 1.) Decide the info you have and the info you don't 2.) substitute a variable for the unknown quantity 3.) write an equation to express the relationship in given in the problem and solve meter is same as length gram is the same as mass liter is the same as volume degree Celsius means temperature 12 inches = one foot 3 feet = 1 yard 5, 280 feet = 1 mile 1,760 yards = 1 mile 16 ounces = 1 pound 2,000 pounds = 1 short ton 8 fluid ounces = 1 cup 2 cups = 1 pint 2 pints = 1 quart 4 quarts = 1 gallon name units of linear measure used for length width and heigth inches, feet, miles, meters, kilometers units of linear measure also measure distance distance can be measured.... along a path, highway or sidewalk distance can be measured in a straight line such as point A to point B when labeling x and y coordinates which comes first? (x, y) formula for a rectangle A=lw all squares are rectangles.. true or false true are all rectangles , squares? true or false false what does the symbol ll mean? parallel to what does line mean? a straight line that stretches to infinity in both directions what is a line segment a line segment has two endpoints             p             q--------------------------------- define parallel lines these are two lines in the same plane that do not connect what are perpendicular lines two lines that intersect to form four angles of equal measure with each angle equaling 90 degrees define ray a ray has one endpoint and extends to infinity on the other end define an angle an angle is created two lines, rays, or segments what is the point where two lines intersect is called the vertex when two lines, rays, or segments intersect the opposite angles have equal measure a straight angle measure ....... and is represented by .......... 180 degrees,,, straight line a 90 degree angle is called a ....... angle right angle an angle that is less than 90 degrees is called an acute angle a angle that is more than 90 degrees is called an obtuse angle two angles whose angles measure 90 degrees are called complimentary angles two angles whose measures total 180 degrees are called supplementary angles the sum of the measures of all the angles in a triangle is 180 degrees equilateral triangles have 3 equal sides, making each angle 60 degrees isosceles triangles have 2 equal sides and having two angles of equal measure right triangles have a 90 degree angle and the side opposite the right angle is called the hypotenuse. The other 2 sides are called legs Define ratio a comparison of two or more quantities; for example, if there are 20 women and 15 men in the classroom, the ratio of the number of women to the number of men is 20 to 15 or 20:15 or 20/15 what is a proportion? a statement of equality between two ratios; for example in the previous question 20 women to 15 men in the classroom, if another classroom had 3 women to 4 men, you would say 20:15=4:3 if a student takes 2 days to read 1 book, how long does it take the student to read 5 books at the same rate? How would you express this? 2/1=x/5 cross multiply answer is 10 what is associative grouping (a+b) +c= a +(b+c)(axb) x c= a x (bxc) what is using commutative order a+b=b+caxb=bxc how do you use the distributive operation property ax(b+c)=(axb)x(axc) 2x=4y+6 x=4y+32x-4y=62x+1=4y+72x-2=4y+4 A= A=bh What is the Pythagorean Theory a2+b2=c2 area of a triangle is A=1/2 bh the area of a rectangle or square is A=lw the diameter of a circle d=2r  (find diameter equals 2 times the radius) what is the value of 3.14 or 22/7 circumference equals pie times diameter or pie times 2 times r (radius) area of circle is area equals A = pie r2 volume equals V=lwh distance = distance =speed x time time = time = distance divided by speed speed = speed = distance over time find average 2, 10, 7, 3, 3 2+10+7+3+3 over 5 because there is five numbers what is median 2, 10, 7, 3, 3 3 what is range 2, 10, 7, 3, 3 the range is eight because the largest number is 10 and 2 is the least number and 10-2=8 Authorcutieme643 ID229783 Card SetMATH PRAXIS 1 PPST DescriptionMath Praxis 1 Updated2013-08-14T20:13:04Z Show Answers