TSI Math test14
PEMDAS - ANSWERS-(parenthesis, exponents, multiplication, division, addition, subtraction)
work left to right
Exponential Notation - ANSWERS-Ex: 6^4, 2^3, 9^10, etc.
Expanded Form - ANSWERS-Ex: 7x7x7, 6x6, 2x2x2x2x2, etc.
Standard Notation - ANSWERS-Ex: 5^2= 25; 25 is the standard notation (the answer or solution)
+x+ - ANSWERS-=+
+x- - ANSWERS-=-
-x- - ANSWERS-=+
Adding or Subtracting fractions - ANSWERS-You need a common denominator
Multiplying fractions - ANSWERS-no special rule, just multiply Ex: 2/5 x 3/9= 6/45
Dividing fractions - ANSWERS-flip 2nd fraction and multiply Ex: 2/5 divided by 3/9= 2/5 x 9/3
Solving Equations w/ fractions - ANSWERS-either multiply both sides of the equation by the
reciprocal of the fraction, or multiply both sides of the equation by the denominator of the
fraction
, Percent Increase or Decrease problems - ANSWERS-Formula: amount of change/ original
number. Ex: Find the percent decrease if the price changes from $60 to $39. 60-39= 21. amount
of change= $21 original number= $60. $21/$60= 0.35. Convert to percents. 0.35= 35%
Interest - ANSWERS-Formula: interest= principal x rate x time (I= PxRxT)
Point - ANSWERS--A point has no dimension
-It is represented by a dot
-A point is written using an upper-case letter
Line - ANSWERS--A line has one dimension
-Named using any two point on a line w a two sided arrow above them
-It can also be named using a lower-case cursive letter
Collinear Points - ANSWERS-Points that are on the same line
Plane - ANSWERS--A plane has two dimensions
-It is represented by a shape that looks like a floor or a wall, but it extends w/o an end
-Through any three points not on the same line there is exactly one plane
-A plane is written using 3 non-collinear points or with upper-case cursive letter
Coplanar points - ANSWERS-Points that lie in the same plane
Line Segment - ANSWERS-A line segment is named using both end points with a line above
them
PEMDAS - ANSWERS-(parenthesis, exponents, multiplication, division, addition, subtraction)
work left to right
Exponential Notation - ANSWERS-Ex: 6^4, 2^3, 9^10, etc.
Expanded Form - ANSWERS-Ex: 7x7x7, 6x6, 2x2x2x2x2, etc.
Standard Notation - ANSWERS-Ex: 5^2= 25; 25 is the standard notation (the answer or solution)
+x+ - ANSWERS-=+
+x- - ANSWERS-=-
-x- - ANSWERS-=+
Adding or Subtracting fractions - ANSWERS-You need a common denominator
Multiplying fractions - ANSWERS-no special rule, just multiply Ex: 2/5 x 3/9= 6/45
Dividing fractions - ANSWERS-flip 2nd fraction and multiply Ex: 2/5 divided by 3/9= 2/5 x 9/3
Solving Equations w/ fractions - ANSWERS-either multiply both sides of the equation by the
reciprocal of the fraction, or multiply both sides of the equation by the denominator of the
fraction
, Percent Increase or Decrease problems - ANSWERS-Formula: amount of change/ original
number. Ex: Find the percent decrease if the price changes from $60 to $39. 60-39= 21. amount
of change= $21 original number= $60. $21/$60= 0.35. Convert to percents. 0.35= 35%
Interest - ANSWERS-Formula: interest= principal x rate x time (I= PxRxT)
Point - ANSWERS--A point has no dimension
-It is represented by a dot
-A point is written using an upper-case letter
Line - ANSWERS--A line has one dimension
-Named using any two point on a line w a two sided arrow above them
-It can also be named using a lower-case cursive letter
Collinear Points - ANSWERS-Points that are on the same line
Plane - ANSWERS--A plane has two dimensions
-It is represented by a shape that looks like a floor or a wall, but it extends w/o an end
-Through any three points not on the same line there is exactly one plane
-A plane is written using 3 non-collinear points or with upper-case cursive letter
Coplanar points - ANSWERS-Points that lie in the same plane
Line Segment - ANSWERS-A line segment is named using both end points with a line above
them
