TSI Math test 2022 Complete

PEMDAS (parenthesis, exponents, multiplication, division, addition, subtraction) work left to right Exponential Notation Ex: 6^4, 2^3, 9^10, etc. 00:14 01:10 Expanded Form Ex: 7x7x7, 6x6, 2x2x2x2x2, etc. Standard Notation Ex: 5^2= 25; 25 is the standard notation (the answer or solution) +x+ =+ +x- =- -x- =+ Adding or Subtracting fractions You need a common denominator Multiplying fractions no special rule, just multiply Ex: 2/5 x 3/9= 6/45 Dividing fractions flip 2nd fraction and multiply Ex: 2/5 divided by 3/9= 2/5 x 9/3 Solving Equations w/ fractions 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 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%