TSI Math test With Complete Solutions

PEMDAS correct answer: (parenthesis, exponents, multiplication, division, addition, subtraction) work left to right Exponential Notation correct answer: Ex: 6^4, 2^3, 9^10, etc. Expanded Form correct answer: Ex: 7x7x7, 6x6, 2x2x2x2x2, etc. Standard Notation correct answer: Ex: 5^2= 25; 25 is the standard notation (the answer or solution) +x+ correct answer: =+ +x- correct answer: =- -x- correct answer: =+ Adding or Subtracting fractions correct answer: You need a common denominator Multiplying fractions correct answer: no special rule, just multiply Ex: 2/5 x 3/9= 6/45 Dividing fractions correct answer: flip 2nd fraction and multiply Ex: 2/5 divided by 3/9= 2/5 x 9/3 Solving Equations w/ fractions correct answer: 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 answer: 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 answer: Formula: interest= principal x rate x time (I= PxRxT) Point correct answer: -A point has no dimension -It is represented by a dot -A point is written using an upper-case letter Line correct answer: -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 answer: Points that are on the same line Plane correct answer: -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