TSI Math Vocabulary | Actual Questions and Answers Latest
Updated 2026/2027 (Graded A+)
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PEMDAS
- ✔✔(parenthesis, exponents, multiplication, division, addition, subtraction) work left to right
•
Standard Notation
- ✔✔Ex: 5^2= 25; 25 is the standard notation (the answer or solution)
•
+ times +
- ✔✔+
•
+ times -
- ✔✔-
•
- times -
- ✔✔+
•
Adding or Subtracting fractions
- ✔✔Need a common denominator. Then add numerators.
•
Multiplying fractions
- ✔✔Multiply top*top, bottom*bottom
•
Dividing fractions
i. - ✔✔Flip 2nd fraction and multiply
ii. Ex: 2/5 ÷ 3/9= 2/5 × 9/3
•
Percent Increase or Decrease problems
- ✔✔Formula: amount of change÷original number.
•
Interest
- ✔✔Formula: I=prt
•
Line
, - ✔✔Named using any two point on a line w a two sided arrow above them
•
Collinear Points
- ✔✔Points that are on the same line
•
Plane
- ✔✔A plane is written using 3 non-collinear points
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Coplanar points
- ✔✔Points that lie in the same plane
•
Line Segment
- ✔✔A line segment is named using both end points with a line above them
•
Ray
- ✔✔A ray is named using its endpoint first and then any other point on the ray pointing to
the right above them
•
Intersecting lines
- ✔✔2 lines that share exactly one point
•
Parallel lines
- ✔✔2 lines that are always the same distance apart and never touch
•
Perpendicular lines
- ✔✔The relationship between 2 lines which meet at a right angle (90degrees). Perpendicular
lines= 2 lines intersect at a right angle
•
Right angle
- ✔✔90 degrees
•
Acute angle
- ✔✔between 0 degrees and 90 degrees
•
Obtuse angle
- ✔✔between 90 degrees and 180 degrees
Updated 2026/2027 (Graded A+)
•
PEMDAS
- ✔✔(parenthesis, exponents, multiplication, division, addition, subtraction) work left to right
•
Standard Notation
- ✔✔Ex: 5^2= 25; 25 is the standard notation (the answer or solution)
•
+ times +
- ✔✔+
•
+ times -
- ✔✔-
•
- times -
- ✔✔+
•
Adding or Subtracting fractions
- ✔✔Need a common denominator. Then add numerators.
•
Multiplying fractions
- ✔✔Multiply top*top, bottom*bottom
•
Dividing fractions
i. - ✔✔Flip 2nd fraction and multiply
ii. Ex: 2/5 ÷ 3/9= 2/5 × 9/3
•
Percent Increase or Decrease problems
- ✔✔Formula: amount of change÷original number.
•
Interest
- ✔✔Formula: I=prt
•
Line
, - ✔✔Named using any two point on a line w a two sided arrow above them
•
Collinear Points
- ✔✔Points that are on the same line
•
Plane
- ✔✔A plane is written using 3 non-collinear points
•
Coplanar points
- ✔✔Points that lie in the same plane
•
Line Segment
- ✔✔A line segment is named using both end points with a line above them
•
Ray
- ✔✔A ray is named using its endpoint first and then any other point on the ray pointing to
the right above them
•
Intersecting lines
- ✔✔2 lines that share exactly one point
•
Parallel lines
- ✔✔2 lines that are always the same distance apart and never touch
•
Perpendicular lines
- ✔✔The relationship between 2 lines which meet at a right angle (90degrees). Perpendicular
lines= 2 lines intersect at a right angle
•
Right angle
- ✔✔90 degrees
•
Acute angle
- ✔✔between 0 degrees and 90 degrees
•
Obtuse angle
- ✔✔between 90 degrees and 180 degrees
