Alphabetical Lesson List: (77) lessons starting with the letter P

[+]   P-Hat Confidence Interval
Free P-Hat Confidence Interval Calculator - Given a large sized distribution, and a success amount for a certain criteria x, and a confidence percentage, this will calculate the confidence interval for that criteria.

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Paired Means Difference
Free Paired Means Difference Calculator - Calculates an estimation of confidence interval for a small or large sample difference of data. Confidence interval for paired means

Features:  Calculator | Quiz Generator

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[+]   Parabolas
Free Parabolas Calculator - Determines the focus, directrix, and other related items for a parabola.

Features:  Calculator | Quiz Generator | Watch the Video

Examples (3):
y^2 = -12x
x^2 = 24y
(y - 2)^2 = 12(x - 5)

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[+]   Parallel Resistors
Free Parallel Resistors Calculator - Given a set of parallel resistors, this calculates the total resistance in ohms, denoted Rt

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Partial Quotient
Free Partial Quotient Calculator - Divides 2 numbers using the Partial Quotient

Features:  Calculator | Practice Problem Generator

Examples (1):
471/35

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[+]   Partial Sum
Free Partial Sum Calculator - Calculates a partial sum for 2 numbers.

Features:  Calculator | Practice Problem Generator

Examples (1):
375+43

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[+]   Pascal-Floyd-Leibniz Triangle
Free Pascal-Floyd-Leibniz Triangle Calculator - This generates the first (n) rows of the following triangles:
Pascal's Triangle
Leibniz's Harmonic Triangle
Floyd's Triangle

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (3):
floyds triangle 6 rows
5 rows of pascal triangle
leibniz 8 rows

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[+]   Password Generator
Free Password Generator Calculator - This generates an alphanumeric password between a minimum and maximum character length that you specify.

Features:  Calculator

Examples (1):
10 character password

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[+]   Payback Period
Free Payback Period Calculator - Given a set of cash inflows and cash outflows at certain times, this determines the net cash flow, cumulative cash flow, and payback period

Features:  Calculator | Practice Problem Generator | Watch the Video

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[+]   Pentagonal Number
Free Pentagonal Number Calculator - This calculator determines the nth pentagonal number

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (2):
30th Pentagonal number
45th Pentagonal number

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[+]   Pentagons
Free Pentagons Calculator - Given a side length and an apothem, this calculates the perimeter and area of the pentagon.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Percent Error
Free Percent Error Calculator - Percentage error is the difference between an experimental measured value and a theoretical actual value

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (1):
What is the percent error for an actual value of 100 and a theoretical value of 95?

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[+]   Percent Math
Free Percent Math Calculator - Simplifies expressions involving numbers and percents with respect to addition and subtraction

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (1):
60 + 35% - 10% + 40

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[+]   Percent Off Problem
Free Percent Off Problem Calculator - Given the 3 items of a percent word problem, Reduced Price, percent off, and full price, this solves for any one of the three given two of the items.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (4):
50% off 90
35 percent off 80
45.80 - 22.5%
200 decreased by 40%

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[+]   Percentage Appreciation
Free Percentage Appreciation Calculator - Solves for Book Value given a flat rate percentage appreciation per period

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Percentage Change
Free Percentage Change Calculator - Calculates the percentage change between two values. Percentage Increase or Percentage Decrease

Features:  Calculator | Quiz Generator | Practice Problem Generator

Examples (2):
Percent of change from 10 to 15
percentage change from 40 to 100

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[+]   Percentage Depreciation
Free Percentage Depreciation Calculator - Solves for Book Value given a flat rate percentage depreciation per period

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Percentage of Completion
Free Percentage of Completion Calculator - Given a sales price, total costs, and costs per period, this determines the gross profit to date using the percentage of completion method.

Features:  Calculator | Practice Problem Generator

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[+]   Percentage of the Pie Word Problem
Free Percentage of the Pie Word Problem Calculator - This takes two or three fractions of ownership in some good or object, and figures out what remaining fraction is left over.

Features:  Calculator

Examples (1):
A parent died and left an estate to four children. one inherited 4/9 of the estate, the second inherited 7/81 and the third inherited 10/27 how much did the fouth inherit?

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[+]   Percentage Word Problems
Free Percentage Word Problems Calculator - Solves percentage word problems

Features:  Calculator | Practice Problem Generator

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[+]   Percentage-Decimal-Fraction Relations
Free Percentage-Decimal-Fraction Relations Calculator - Calculates the relational items between a fraction, a decimal (including repeating decimal and terminating decimal), a percentage, and the numerator and denominator piece of that fraction. Also calculates the percentage change going from one number to another or the amount increase or decrease of a percentage above/below a number. Round decimals. decimals into fractions

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (14):
20% of 50
42 percent of 80
1/8 to decimal
convert 5/9 to decimal
88.596 to fraction
45 is 10% of what number
55 is 60% of what?
80% of what number =40
What is the percent change from 90 to 110
What percent of 20 is 30?
45% of what is 9
10% more than 90
30% less than 120
What percent of 3000 is 389.4

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[+]   Percentile for Normal Distribution
Free Percentile for Normal Distribution Calculator - Given a mean, standard deviation, and a percentile range, this will calculate the percentile value.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Percentiles
Free Percentiles Calculator - Given a set of scores and a target score, this will determine the percentile of the target score using two different formulas.

Features:  Calculator | Practice Problem Generator | Watch the Video

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[+]   Periodic Table Items
Free Periodic Table Items Calculator - Shows details of all the elements on the periodic table including atomic weight, natural state.

Features:  Calculator | Quiz Generator | Watch the Video

Examples (5):
Sn
AG
Silver
Potassium
tungsten

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[+]   Permutations and Combinations
Free Permutations and Combinations Calculator - Calculates the following:
Number of permutation(s) of n items arranged in r ways = nPr
Number of combination(s) of n items arranged in r unique ways = nCr including subsets of sets

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (9):
10 permutations of 6
5 combinations of 3
9 combination 4
8 combination 2
6 permutation 2
10 permutations of 5
6P3
7c4
how many subsets of at least 3 elements can be formed from a set of 4 elements

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[+]   Permutations with Replacement
Free Permutations with Replacement Calculator - Calculates the following:
How many permutations can we have from a sample of r elements from a set of n distinct objects where order does matter and replacements are not allowed?

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (0):

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[+]   Perpetuities
Free Perpetuities Calculator - Solves for Present Value, Payment, or Interest rate for a Perpetuity Immediate or a Perpetuity Due.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Perpetuity
Free Perpetuity Calculator - Walks you through the definition of a perpetuity, the present value of a perpetuity immediate, and the present value of a perpetuity due.

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (0):

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[+]   Phone Number Translator
Free Phone Number Translator Calculator - Given a phone number with letters in it, this calculator will determine the numeric phone number for you to dial.

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Phonetic Algorithms
Free Phonetic Algorithms Calculator - Given a name, this calculator translates a name to one of the following 3 phonetic algorithms:
* Soundex
* Metaphone
* New York State Identification and Intelligence System (NYSIIS)

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (3):
CELEBRITY TO SOUNDEX
homework to metaphone
algebra to NYSIIS

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[+]   Phonograms
Free Phonograms Calculator - Shows the 75 basic phonograms of the English language

Features:  Calculator | Quiz Generator | Practice Problem Generator

Examples (0):

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[+]   PI
Free PI Calculator - This calculator performs operations with PI and gives you other options for π related calculations.

Features:  Calculator | Practice Problem Generator

Examples (1):
16pi

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[+]   Pick's Theorem
Free Pick's Theorem Calculator - This calculator determines the area of a simple polygon using interior points and boundary points using Pick's Theorem

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (0):

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[+]   Pixels Per Inch PPI
Free Pixels Per Inch PPI Calculator - This calculator determines the PPI from width, height, and diagonal in inches

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (3):
3 bytes
5 gb
9mb.

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[+]   Place Value
Free Place Value Calculator - Given a whole number or a decimal, the calculator will perform place number analysis on each place in your number.
For the whole and decimal portion, the calculator goes out to the 100 trillion mark.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (2):
12345.987 place value
place value for 56987.2365

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[+]   Plane and Parametric Equations in R3
Free Plane and Parametric Equations in R3 Calculator - Given a vector A and a point (x,y,z), this will calculate the following items:
1) Plane Equation passing through (x,y,z) perpendicular to A
2) Parametric Equations of the Line L passing through the point (x,y,z) parallel to A


Features:  Calculator | Watch the Video

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[+]   Plane Geometry Operations
Free Plane Geometry Operations Calculator - Evaluates and simplifies various plane geometry notation and operations

Features:  Calculator | Practice Problem Generator

Examples (2):
angle abc
BD Bisects AC

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[+]   Point and a Line
Free Point and a Line Calculator - Enter any line equation and a 2 dimensional point.  The calculator will figure out if the point you entered lies on the line equation you entered. If the point does not lie on the line, the distance between the point and line will be calculated.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Point Estimate and Margin of Error
Free Point Estimate and Margin of Error Calculator - Given an upper bound and a lower bound and a sample size, this calculate the point estimate, margin of error.

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Poisson Distribution
Free Poisson Distribution Calculator - Calculates the probability of 3 separate events that follow a poisson distribution.
It calculates the probability of exactly k successes P(x = k)
No more than k successes P (x <= k)
Greater than k successes P(x >= k)
Each scenario also calculates the mean, variance, standard deviation, skewness, and kurtosis.
Calculates moment number t using the moment generating function

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Polar Conics
Free Polar Conics Calculator - Given eccentricity (e), directrix (d), and angle θ, this determines the vertical and horizontal directrix polar equations.

Features:  Calculator | Practice Problem Generator

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[+]   Polygon Side
Free Polygon Side Calculator - Determines the sides of a polygon given an interior angle sum.

Features:  Calculator | Practice Problem Generator

Examples (1):
Sum of interior angle is 540.Find the number of sides

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[+]   Polygons
Free Polygons Calculator - Using various input scenarios of a polygon such as side length, number of sides, apothem, and radius, this calculator determines Perimeter or a polygon and Area of the polygon. This also determines interior angles of a polygon and diagonals of a polygon as well as the total number of 1 vertex diagonals.

Features:  Calculator

Examples (3):
diagonals for polygon with 10 sides
interior angle with 7 sided polygon
vertex for polygon with 5 sides

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[+]   Polynomial
Free Polynomial Calculator - This calculator will take an expression without division signs and combine like terms.
It will also analyze an polynomial that you enter to identify constant, variables, and exponents. It determines the degree as well.

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (5):
4x^2+9x+3x^2-6+9-8x
4x + 3x + 9x + 8 + 7
5y - 9x + 6y + 3x - 7 - 8
2x^2+3(x-4)+3y-9x(x-7)-6y^4(5-3y)
Analyze 4x^3-9x^2+7y-9z+w-f+6

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[+]   Polynomial Long Division
Free Polynomial Long Division Calculator - Polynomial Long Division Calculator

Features:  Calculator

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[+]   Pool Volume
Free Pool Volume Calculator - Given a round shaped pool, this calculates the volume (Capacity) in gallons of the pool when filled with water

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Population Doubling Time
Free Population Doubling Time Calculator - Determines population growth based on a doubling time.

Features:  Calculator | Practice Problem Generator

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[+]   Population Growth
Free Population Growth Calculator - Determines population growth based on an exponential growth model.

Features:  Calculator | Practice Problem Generator | Watch the Video

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[+]   Portfolio Rate of Return
Free Portfolio Rate of Return Calculator - Given a portfolio of individual assets with returns and weights, this calculates the total portfolio rate of return.

Features:  Calculator | Practice Problem Generator | Watch the Video

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[+]   Positivity Rate
Free Positivity Rate Calculator - This calculator determines the positivity rate using positive tests and total tests

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (0):

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[+]   Power Sets and Set Partitions
Free Power Sets and Set Partitions Calculator - Given a set S, this calculator will determine the power set for S and all the partitions of a set.

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (2):
a,b,c,d,e
2,4,6,8,10

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[+]   Powers Of
[+]   Pre-Algebra Summary
Free Pre-Algebra Summary Calculator - A summary of relevant notes and shortcuts for pre-algebra

Features:  Calculator

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[+]   Pre-Calculus Summary
Free Pre-Calculus Summary Calculator - Summary notes, tips, and tricks for pre-calculus

Features:  Calculator

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[+]   Predecessor
Free Predecessor Calculator - Calculates the predecessor number to a given number

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (3):
predecessor for 25
what is the predecessor for 30
50 predecessor

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[+]   Prefix Multipliers
Free Prefix Multipliers Calculator - Shows a table of prefix multipliers, designators, symbols, and values

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (0):

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[+]   Pressure Conversions
Free Pressure Conversions Calculator - This calculator converts between the following pressure measurements:
atmosphere
bar
dynes/cm2
in. Hg
in. water
kg/cm2
mbar
mtorr or micron Hg
Pa or N/m2
PSI or lb/in2
torr or mm Hg

Features:  Calculator | Practice Problem Generator

Examples (3):
4 mbar
6 atmospheres
3 pascal

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[+]   Pressure Law
Free Pressure Law Calculator - This will solve for any of the 4 items in the Pressure Law equation, also known as Gay-Lussacs Law assuming constant volume
P1 ÷ T1 = P2 ÷ T2

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (2):
p1=200,p2=80,t1=75
t1=70,t2=80,p1=300

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[+]   Price
Free Price Calculator - Given a cost and a gross margin percentage, this calculator calculates price, gross profit, markup percentage

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (1):
John has a target gross margin percent of 50 and a cost of 200. What is the price target?

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[+]   Prime Numbers
Free Prime Numbers Calculator - Shows up to 3000 prime numbers and a cumulative sum

Features:  Calculator | Quiz Generator | Watch the Video

Examples (3):
generate 30 prime numbers
generate composite numbers
show prime numbers

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[+]   Primitive Root
Free Primitive Root Calculator - Given a prime number p and a potential root of b, this determines if b is a primitive root of p.

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (1):
Is 3 a primitive root of 7

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[+]   Probability
Free Probability Calculator - This lesson walks you through the basics of probability like the probability definition, events, outcomes, experiments, and probability postulates

Features:  Calculator | Practice Problem Generator | Watch the Video

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[+]   Probability (A U B U C)
Free Probability (A U B U C) Calculator - Calculates the probability of a union of a three event sample space, A, B, and C, as well as P(A), P(B), P(C), P(A ∩ B), P(A ∩ C), P(B ∩ C), P(A ∩ B ∩ C).

Features:  Calculator

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[+]   Probability (A U B)
Free Probability (A U B) Calculator - Given a 2 event sample space A and B, this calculates the probability of the following events:
P(A U B)
P(A)
P(B)
P(A ∩ B)

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Product of Consecutive Numbers
Free Product of Consecutive Numbers Calculator - Finds the product of (n) consecutive integers, even or odd as well. Examples include:
product of 2 consecutive integers
product of 2 consecutive numbers
product of 2 consecutive even integers
product of 2 consecutive odd integers
product of 2 consecutive even numbers
product of 2 consecutive odd numbers
product of two consecutive integers
product of two consecutive odd integers
product of two consecutive even integers
product of two consecutive numbers
product of two consecutive odd numbers
product of two consecutive even numbers
product of 3 consecutive integers
product of 3 consecutive numbers
product of 3 consecutive even integers
product of 3 consecutive odd integers
product of 3 consecutive even numbers
product of 3 consecutive odd numbers
product of three consecutive integers
product of three consecutive odd integers
product of three consecutive even integers
product of three consecutive numbers
product of three consecutive odd numbers
product of three consecutive even numbers
product of 4 consecutive integers
product of 4 consecutive numbers
product of 4 consecutive even integers
product of 4 consecutive odd integers
product of 4 consecutive even numbers
product of 4 consecutive odd numbers
product of four consecutive integers
product of four consecutive odd integers
product of four consecutive even integers
product of four consecutive numbers
product of four consecutive odd numbers
product of four consecutive even numbers
product of 5 consecutive integers
product of 5 consecutive numbers
product of 5 consecutive even integers
product of 5 consecutive odd integers
product of 5 consecutive even numbers
product of 5 consecutive odd numbers
product of five consecutive integers
product of five consecutive odd integers
product of five consecutive even integers
product of five consecutive numbers
product of five consecutive odd numbers
product of five consecutive even numbers


Features:  Calculator | Practice Problem Generator

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[+]   Profit Equation
Free Profit Equation Calculator - Using the Profit Equation with inputs (Revenue-Cost-Profit-Tax), this determines the relevant output including gross proft, gross profit margin, net profit, and net profit margin.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Projectile Motion
[+]   Proofs
Free Proofs Calculator - Various Proofs in Algebra

Features:  Calculator | Watch the Video

Examples (2):
Prove -(a + b) = (-a) + (-b)
prove sqrt(2) is irrational

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[+]   Proportion
Free Proportion Calculator - 1) Calculates the missing link of 2 equivalent proportions or ratios.
2) Also determines if two numerical proportions that you entered such as 1/10=6/12 are equivalent or not equivalent. Note: You can use all allowable operators such as =,<,≤,>,≥

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (8):
a/10=6/12
2/3x=6/9
-5/6=y/24
1/2=4/2z
1/0=6/12
-8/9x > -61/81
1/2=?/10
x:8=4/32

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[+]   Proportion Sample Size
Free Proportion Sample Size Calculator - This calculator determines a sample size to select to meet certain criteria related to a confidence percentage, reliability percentage, and a p value proportion. Simply enter your values not using percentage signs. This works whether p^ is known or not known.

Features:  Calculator | Practice Problem Generator | Watch the Video

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[+]   Punnett Square
Free Punnett Square Calculator - Completes a punnet square based on genotypes

Features:  Calculator | Watch the Video

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[+]   Put Call Parity
Free Put Call Parity Calculator - This solve for any of the 6 items in the put call parity for European options

Features:  Calculator | Practice Problem Generator

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[+]   Put Options and Call Options
Free Put Options and Call Options Calculator - Shows the basics of a call option and put option including intrinsic value, extrinsic value, and in/out/at the money

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Puzzle Master
Free Puzzle Master Calculator - A link to our friends: Puzzle Master has a large and unique collection of brain teasers; puzzles for sale. In addition they also carry chess,mechanical banks, puzzle books, magic trick books, boomerangs, etc.

Features:  Calculator

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[+]   Pyramids
Free Pyramids Calculator - Solves for Volume (Capacity), Surface Area, height, or radius of a Pyramid.

Features:  Calculator | Quiz Generator | Practice Problem Generator

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[+]   Pythagorean Theorem
Free Pythagorean Theorem Calculator - Figures out based on user entry the missing side or missing hypotenuse of a right triangle. In addition, the calculator shows the proof of the Pythagorean Theorem and then determines by numerical evaluation if the 2 sides and hypotenuse you entered are a right triangle using the Pythagorean Theorem

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (7):
a=3,b=4
a=3,c=5
b=4,c=5
find the hypotenuse of a right triangle that has legs of 4 inches and 5 inches
3^2 + 4^2 = c^2
3^2 + b^2 = 5^2
a^2 + 4^2 = 5^2

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[+]   Pythagorean Theorem Trig Proofs
Free Pythagorean Theorem Trig Proofs Calculator - Shows the proof of 3 pythagorean theorem related identities using the angle θ:
Sin2(θ) + Cos2(θ) = 1
Tan2(θ) + 1 = Sec2(θ)
Sin(θ)/Cos(θ) = Tan(θ)

Features:  Calculator

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