Download Math concepts and formulas and more Exams Nursing in PDF only on Docsity! NLN pax- Math Natural number - AnswerCounting numbers, positive, not 0 Integer - AnswerAny whole number or its opposite and 0 Prime number - AnswerA natural number that can only be divided by 1 and itself. 2,3,5,7,11,13,17 Factor - AnswerA natural number that can be evenly divided into a number. Ex 12 - can be divided by 1,2,3,4,6,12 Multiple - AnswerProduct of 2 natural numbers. 36 is a multiple of 9 because 9x4=36 Term - AnswerA single number, variable, or combinations thereof. Product - AnswerAnswer to a multiplication problem Quotient - AnswerAnswer to a division problem Sum - AnswerAnswer to an addition problem Difference - AnswerAnswer to a subtraction problem Order of operations - AnswerPEMDAS Adding fractions - AnswerAdd only the numerators when the denominators are the same. NLN pax- Math For different denominators, multiply to get them to match. Multiply the first fraction by the opposite denominator and vice versa. Subtracting fractions - AnswerWhen denominators are different... Similar to adding. Make two fractions with matching denominators. Subtract and simplify. Multiply fractions - AnswerMultiply the numerators and denominators straight across. Simplify. Dividing fractions - AnswerFlip the numbers of the second fraction (reciprocal). Multiply across and simplify multiply decimals - AnswerMultiply as normal, count total number of decimal places in each factor of original expression and put the decimal point that many places over. Dividing decimals - AnswerMove decimal of divisor over to create a whole number. Move the decimal place of the divided the same point over. Divide like usual Decimal to fraction - AnswerEx. .75 = .75/1 = 75/100 = 3/4 Percentage - AnswerEx. What is 52% of 326? 326 X 0.52 =169.52 NLN pax- Math Simplify square roots - AnswerFactor out the square and place it outside as a coefficient. Ex. {72 = {36*2 = {6*6*2 = 6{2 Multiply polynomials - AnswerCan multiply and combine unlike bases: (8x) (2x^3) = 8*2*x*x*y*y*y = 16x^2y^3 Divide polynomials - AnswerTreat like a fraction, reduce coefficients, reduce exponents Ex. 36a^3 / 10a^2 = 18a^3 / 5a^2 = 18a / 5 Multiply/divide binomials - AnswerFOIL First, Outer, Inner, Last Ex. (4x-3) (3x-6) First 4x * 3x Outer 4x * -6 Inner -3 * 3x Last -3 * -6 Polynomial factoring - AnswerFind greatest common factor, divide each term by GCF, place GCF outside ( ) NLN pax- Math Ex. 27x^2 + 15x GCF=3x 3x (9x + 5) Quadratic expressions - Answerax^2 + bx + c Create two sets of binomials Ex. x^2 + 8x + 12 (X+ ) (x+ ) Figure out the factors of the last term (12), and find the one, that when added together, equals the coefficient of the middle term (8) (X+2) (x+6) Complementary angles - AnswerTwo angles that together make a right angle (90) Supplementary angle - AnswerTwo angles that together make a staring line (180) Corresponding angle - AnswerParallel lines with another line intersecting both (transversal) Also, alternate interior angles are equal, alternate exterior angles are equal Triangles - angles - Answer3 internal angles always = 180 Internal + external angle always = 180 NLN pax- Math Figure out the value of an external angle by adding the two internal angles that do not touch the external angle. Isosceles triangle - AnswerTwo sides of equal length, and therefore, two angles that are equal Equilateral triangle - AnswerAll sides and angles are equal - angles are always 60 Area of a triangle - AnswerArea = 1/2bh (Base, height) Pythagorean theorem - AnswerTo figure out the third side of a right triangle A^2 + b^2 = c^2 (Can also be used to figure out the diagonal in a rectangle Area of trapezoid - Answer Circumference - AnswerCircumference = 2*pi*radius Area of circle - AnswerArea = pie r^2 Volume of rectangular solids - AnswerV = l*w*h Surface area of rectangular solids - Answer Volume of cylindrical solid - Answer Surface area of cylindrical solid - Answer
