Exam (elaborations)
TSI Math Practice More (100% Correct)
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TSI Math Practice More (100% Correct)
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TSI Math Practice More (100% Correct)PEMDAS Correct Ans - (parenthesis, exponents, multiplication, division, addition, subtraction) work left to right
Exponential Notation Correct Ans - Ex: 6^4, 2^3, 9^10, etc.
Expanded Form Correct Ans - Ex: 7x7x7, 6x6, 2x2x2x2x2, etc.
Standard Notation Correct Ans - Ex: 5^2= 25; 25 is the standard notation (the answer or solution)
+x+ Correct Ans - =+
+x- Correct Ans - =-
-x- Correct Ans - =+
Adding or Subtracting fractions Correct Ans - You need a common denominator
Multiplying fractions Correct Ans - no special rule, just multiply Ex: 2/5 x 3/9= 6/45
Dividing fractions Correct Ans - flip 2nd fraction and multiply Ex: 2/5 divided by 3/9= 2/5 x 9/3
Solving Equations w/ fractions Correct Ans - 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 Correct Ans - 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 Correct Ans - Formula: interest= principal x rate x time (I= PxRxT)
Point Correct Ans - -A point has no dimension
-It is represented by a dot
-A point is written using an upper-case letter
Line Correct Ans - -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 Correct Ans - Points that are on the same line
Plane Correct Ans - -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 Correct Ans - Points that lie in the same plane
Line Segment Correct Ans - A line segment is named using both end points with a line above them
Ray Correct Ans - A ray is named using its endpoint first and then any other point on the ray pointing to the right above them
Intersecting lines Correct Ans - 2 lines that share exactly one point
Parallel lines Correct Ans - 2 lines that are always the same distance apart and never touch
Perpendicular lines Correct Ans - The relationship between 2 lines which meet at a right angle (90degrees). Perpendicular lines= 2 lines intersect
at a right angle
Right angle Correct Ans - 90 degrees
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