TSI MATH Study guides, Class notes & Summaries

What percent of 25 is 18? - 72% What is 42% of 67? - 28.14% 56 is 64% of what number? - 87.5 Change 0.0043 to a percent - 0.43% Complement - sum of 2 angles = 90 Supplement - sum of 2 angles = 180

Mode - The mode of a set of numbers is the number that occurs the most Median - Middle number in a set Mean - Mean of a set of numbers is the average when you add all together Permutations - The number of way that objects can be arranged when order makes a difference Order of operations - Parenthese, exponent, multiply, divide, add, subtract

If 3t - 7 = 5t, then 6t= - -21 The variables x and y are directly proportional, and y = 2 when x = 3. What is the value of y when x = 9? - 6 Here are the following graph equations: (1) y = x - 3 (2) y = x + 3 (3) y = 2/3x (4) y = 3/2x

PEMDAS - ANSWER (parenthesis, exponents, multiplication, division, addition, subtraction) work left to right Exponential Notation - ANSWER Ex: 6^4, 2^3, 9^10, etc. Expanded Form - ANSWER Ex: 7x7x7, 6x6, 2x2x2x2x2, etc. Standard Notation - ANSWER Ex: 5^2= 25; 25 is the standard notation (the answer or solution)

range - the difference between the highest and lowest scores in a distribution (think: greatest - least) mode - The value that occurs most frequently in a given data set. (think: Most Often) median - Middle number (think: med = mid)

Elizabeth has a standard die that is labeled 1 to 6, and she rolls it 100 times. Which of the following experimental outcomes is NOT likely? 67 rolls will show a number greater than 2.50 rolls will show an even number. 75 rolls will show a number less than 4.33 rolls will show a number less than 3. - 75 rolls will show a number less than 4

Janet makes homemade dolls. Currently, she produces 23 dolls per month. If she increased her production by 18%, how many dolls would Janet produce each month? - First, calculate 18% of 23. 23 × 0.18 = 4.14 Then, add this value (the increase) to the original value of 23. 23 + 4.14 = 27.14 Rounding off, we get 27.

Janet makes homemade dolls. Currently, she produces 23 dolls per month. If she increased her production by 18%, how many dolls would Janet produce each month? - correct answer First, calculate 18% of 23. 23 × 0.18 = 4.14 Then, add this value (the increase) to the original value of 23. 23 + 4.14 = 27.14 Rounding off, we get 27. What is the formula for Area? - correct answer Area = L*W Bill's new porch is rectangular, with an area of 50 square feet. If the length of the porch is two ...

Area of a triangle - correct answer A=1/2bh Pythagorean Theorem - correct answer a²+b²=c² circumference - correct answer the perimeter of a circle radius - correct answer 1/2 the diameter pi - correct answer 3.14 Area of a circle - correct answer A=πr² Finding circumference - correct answer π=c/d = π(d)=c perimerter - correct answer the distance around a shape area - correct answer Length x Width or Base x Height Are

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 com...