intro to gre math 6:04
mental math: gre estimation 7:55
mental math: dividing by 5 2:49
mental math: doubling and halving 10:03
mental math: squaring shortcuts 12:26
number sense 10:41
the use and abuse of formulas 2:52
learn from your mistakes 10:32
intro to quantitative comparison 13:09
qc strategies - estimation 10:08
qc strategies - matching operations 7:53
plugging in overview 8:00
plugging in for integer properties 4:36
plugging in for percents 7:32
plugging in for word problems 7:29
properties of real numbers 8:25
positive and negative numbers - i 6:00
mental math, addition, and subtraction 6:19
positive and negative numbers - ii 10:10
order of operations 11:26
intro to decimals 11:28
rounding 6:19
multiples of 10 9:45
intro to fractions 11:10
conversions: fractions and decimals 8:14
fraction properties - i 8:35
comparing fractions i 10:25
comparing fractions ii (advanced) 10:34
operations with fractions 8:22
fraction properties - ii 7:57
mixed numerals and improper fractions 10:30
operations with proportions 6:36
word problems with fractions 3:37
intro to percents 5:27
working with percents 3:35
number sense and percents 4:23
percent increases and decreases 10:35
sequential percent changes 6:53
simple and compound interest 13:59
intro to ratios 9:57
combining ratios 11:17
ratios and rates 6:15
divisibility 10:10
divisibility rules 8:01
multiples 9:54
prime numbers 6:28
prime factorization 8:17
counting factors of large numbers 12:15
squares of integers 5:30
greatest common factor 5:57
least common multiple 9:18
gcd lcm formula 5:32
even and odd integers 10:07
testing cases 6:02
remainders 11:40
integer properties strategies 6:33
intro to algebra 7:56
simplifying expressions 6:32
multiplying expressions 7:52
foil method 8:50
factoring - gcf 5:10
factoring - difference of two squares 12:01
factoring - quadratics 7:50
factoring - combined 4:25
advanced numerical factoring 7:09
factoring - rational expressions 5:11
basic equation solving 6:19
eliminating fractions 9:11
quadratic equations 8:04
two equations, two unknowns - i 7:58
two equations, two unknowns - ii 10:22
system - number of solutions 7:21
three equations with three unknowns 9:00
absolute value equations 10:23
function notation 12:50
strange operators 7:46
inequalities - i 13:55
inequalities - ii 11:07
absolute value inequalities 9:35
simplifying with substitutions 5:26
intro to word problems 1:37
assigning variables 9:14
writing equations 7:42
number of variables 8:23
age questions 5:02
intro to motion questions 9:22
average speed 10:19
multiple traveler questions 9:04
shrinking and expanding gaps 12:00
work questions 9:34
growth and decay 4:01
mixture questions 10:00
intro to sets and venn diagrams 9:55
double matrix method 9:23
three criteria venn diagrams 7:49
intro to sequences 7:48
arithmetic sequences 8:24
recursive sequences 10:23
inclusive counting 4:34
sums of sequences 7:32
consecutive integers 9:52
backsolving 7:51
picking numbers 12:56
intro to exponents 9:09
exponential growth 8:39
law of exponents - i 12:46
negative exponents 11:02
law of exponents - ii 10:42
units digit questions 7:30
square roots 14:53
other roots 11:52
properties of roots 4:05
simplifying roots 7:53
operations with roots 12:41
equations with square roots 9:43
fractional exponents 7:13
exponential equations 6:56
rationalizing 13:54
working with formulas 10:25
lines and angles 16:06
triangles - part i 11:32
assumptions & estimation 7:31
geometry strategies - part i 3:44
triangles - part ii 14:54
right triangles 13:54
similar triangles 11:27
special right triangles 11:59
quadrilaterals 17:35
area of quadrilaterals 6:30
polygons 7:30
regular polygons 7:08
circles 6:03
circle properties 12:02
circles, arcs, and sectors 6:39
volume and surface area 12:15
scale factor and scaling 8:21
units of measurement 8:05
geometry strategies - part ii 4:14
the coordinate plane 7:14
graphing lines 5:19
vertical and horizontal lines 9:00
slope 16:46
intercepts 8:34
slope-intercept form 7:55
writing equations of lines 11:35
distance between two points 8:00
reflections in the x-y plane 9:39
graphs of quadratics 7:42
mean, median, mode 9:32
more on mean and median 4:34
weighted averages i 7:00
weighted averages ii (advanced) 8:31
range and standard deviation 16:06
more standard deviation 17:25
normal distribution 11:06
quartiles and boxplots 13:33
more on boxplots 5:39
percentiles 9:09
introduction to counting 4:22
fundamental counting principle 7:39
fcp with restrictions 4:36
factorial notation 4:05
counting what you don't want 9:39
counting with identical items 6:18
eliminating repetition 7:33
combinations 7:49
when to use combinations 9:14
calculating combinations 10:02
permutations and combinations 7:53
counting strategies 3:17
intro to probability 5:59
complementary events and simple rules 3:22
mutually exclusive events 2:33
probability of event a or event b 3:50
examples of the or rule 2:02
independent events 6:26
examples of the and rule 4:44
generalized and rule 3:52
examples of generalized and rule 7:05
binomial situation 8:40
the "at least" scenario 6:25
analyzing questions 8:47
using counting techniques 5:14
listing vs counting vs probability rules 6:31
general probability strategies 4:39
guessing strategies 5:50
intro to data interpretation 2:12
data interpretation strategy 8:56
types of di graphics 12:13
scatter plots 10:10
unconventional graphs 10:32
qc questions & inequalities 12:55
qc strategies - picking numbers 18:02
qc questions & algebra 10:25
qc questions & geometry 15:26
qc questions & integer properties 9:59
summary of qc strategies 4:49
