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ATI TEAS Math Study
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- Value greater than 1, Move decimal to right till you get whole
number.
- Number becomes numerator and 1 becomes denominator with the
number of 0's that matches number of moves for decimal. =
Fraction
- Value less than 1. Use whole number as numerator and the Place Choose an answer 1 Decimal Placement/Converting 2 Percentage Convert to/from Decimal 3 4 Order of Operations Don't know? Study with Learn Lear 1 / 7 n
Decimal Placement/Converting - Value greater than 1, Move decimal to right till you get whole number.
- Number becomes numerator and 1 becomes denominator with the number of 0's that matches number of moves for decimal. = Fraction
- Value less than 1. Use whole number as numerator and the Place value of last decimal Digit as denominator. = Fraction Percentage Convert to/from Decimal TO - Divide % by 100 then remove % symbol FROM - Multiply by 100 then add % symbol Divide % by 100 How do you convert a percent into a decimal? Percentage Convert to/from Fraction TO - Convert to decimal first (divide by 100) then put into simplest form FROM - Convert to decimal (multiply to get 100 in denominator then divide by denominator) then put decimal into % Fraction Convert to Decimal Divide numerator by denominator Order of Operations -PEMDAS (No exponent for TEAS 6) -Parentheses FIRST -Multiplication and Division SECOND (Left to Right) -Addition and Subtraction THIRD (Left to Right) Compare and Order Rational Numbers - Rational Numbers : -6 (-6/1), 5 (5/1), 100 (100/1)
- Irrational Numbers : Square root (any prime number), pi
- Numeric Order : Least to Greatest, Greatest to Least. Best in decimal form. Line them up vertically.
- Fraction/Fraction Form : 5 2/7 (put into decimal) Divide 2 by 7 to get .2857 which will equal 5. <, < Less than, IS fewer than Less than or equal to, is at most, is no more than
Rounding Rules - 5 or LARGER , round UP (decimals)
- 5 or SMALLER , Round DOWN (decimals)
- Numerator is GREATER THAN OR EQUAL TO 1/2 the denominator, then round whole # UP
- Numerator is LESS THAN OR EQUAL TO 1/2 the denominator, then round whole # DOWN Proportions Ratio in fraction form set equal to another ratio in fraction form. ~Example: 50mi/1cm = X/12.6cm (cross multiply) -> 50mi x 12.6cm/1cm=X x 12.6cm/12.6cm (cancel out 12.6cm on Num. and Den.) -> 50mi x 12.6cm/1cm (cancel out cm) = X - > 630mi = X Constant of Proportionality Also known as Rate of Change Ratio between two quantities ~Y=k*x (k is constant, y and X are direct proportion) ~One variable is always the product of the other and a constant, the two are said to be directly proportional. Ratio/Rate Change -Ratio: Simply just a fraction. Once you add/attach WORDS (units) to fraction then it becomes a RATE.
- Example- ~Y2-Y1/X2-X1 rise over run ~Unit Rate - denominator HAS to be 1 Translate Phrases and Sentences into Expressions, Equations, and Inequalities Sentence Fragments become Expression and Full Sentences becomes Equations and Inequalities.
- Examples: Expressions: 3x-5 , , y , 3(2x+7) Equations: 3x-5=70 , y=36 , 3(2x+7)=4x- 9 Inequalities: x-5>70 , y<36 , 3(2x+7)_<_4x- 9 Bar Graph Which graph is used to compare data (has scale)? Area What is the amount of space inside a 2 dimensional shape Line Graph Which graph is used to show data INCREASE or DECREASE over time (has legend)?
Pictograph Which graph shows pics or symbols to show data (legend)? Pie Chart Which graph is a diagram to compare parts as a whole (labeled,legend)? Histogram What graph is like a bar graph with grouped data that is touching? Stem and leaf plot This graph outlines groups of data that fall into range (small to large, left=stem, right=leaf) Scatter plot This graph functions with data, finding simple regression. 4 different types: positive, negative, nonlinear exponential, nonlinear quadratic Mean Which measure of tendency is when you add all #, then divide by how many # there are? Also known as the average. Median Which measure of tendency is when you put the middle # of ordered (Least to Greatest) list, and if # are even, then the 2 middle # averaged out? Mode Which measure of tendency is the number that occurs the most and can be more than one? Range Which measure of tendency is when you subtract the minimum value from maximum value? Outlier What is a data point that is distinctly separated from other values and is considered unexpected value? This value "lies outside" (is much smaller or larger than) most of the other values in a set of data Data trend What is the term for the general tendency of numbers in a set?
Dependent Variable What kind of variable depends on at least one other variable? Independent Variable What kind of variable determines the value of another variable? Length Which geometric quantity is measured with ruler or tape measure? Length Inches, feet, yard, miles, centimeters, meter, and kilometers are all units of? C=2 x PIE x r How is the circumference (distance around a circle) calculated? Pie x r squared How do you find the area of a circle? Length of half a circle What does this formula cover? C=2 PIE r then multiply by the fraction central angle measure/ Perimeter What is the term for the distance around a 2 dimensional shape? Add all the sides How do you find the perimeter of a shape? Subtract the width and height of the other sides. How do you find the perimeter of a shape that is missing a side? A= l x l What is the formula for a square? A= l x w What is the formula for a rectangle? A= 1/2 x b x h What is the formula for a triangle? A= h x b What is the formula for a parallelogram? A= 1/2 x h x (b1 + b2) What is the formula for a trapezoid?
A= PIE x R squared What is the formula for a circle? A= 1/2 x d1 x d2 What is the formula for a rhombus? Conversion factor What is the term for the number used to multiply or divide to change from one value to another? 3 feet How many feet is 1 yd (yard)? 5280 ft How many feet is 1 mi (mile)? 28 grams How many grams in 1 oz (ounce) 8 oz How many oz in 1 cup 16 oz How many oz in 1 pint 2 pints How many pints in 1 quart 4 quarts How many quarts in 1 gal (gallon) 16 oz How many oz in 1 Ib 1 fluid oz How many oz in 2 tsp 8 fluid oz How many oz is 1 glass? King Henry Died By Drinking Chocolate Milk Height What is measure from top to bottom? Length What is the measurement of something from end to end? Base What measurement is the bottom of the figure? Width What is the distance from side to side? Order of operations PEMDAS Please Excuse My Dear Aunt Sally. 1-Parenthesis 2- Exponents 3- Multiplication and Divison (left to right) 4- Addition and Substraction (left to right) Convert decimal to percent by Multiplying by 100 then move decimal two places to the right. Convert percent to decimal by Divide by 100 then move decimal two places to the left.
