Basic Math Calculators: (70) lessons

[+] Absolute Value
Add, subtract, multiply or divide any two numbers with absolute value signs. Positive Difference.

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Examples (8): |35|, -|47|, -|-25|, |4-6+2-3|, -|50|*|-35|, |35|+|-25|, |-50|/-|-25|, abs(-45)Tags: absolute value, addition, division, multiplication, subtraction
[+] Accuracy and Precision
Given an integer or decimal, this determines the precision and accuracy (scale)

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Examples (2): precision of 56.789, accuracy of 45.123679
[+] Addition and Multiplication Multiples
Shows all addition and multiplication multiples up to 20 for a positive integer

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Examples (199): multiples of 2, multiples of 3, multiples of 4, multiples of 5, multiples of 6, multiples of 7, multiples of 8, multiples of 9, multiples of 10, multiples of 11, multiples of 12, multiples of 13, multiples of 14, multiples of 15, multiples of 16, multiples of 17, multiples of 18, multiples of 19, multiples of 20, multiples of 21, multiples of 22, multiples of 23, multiples of 24, multiples of 25, multiples of 26, multiples of 27, multiples of 28, multiples of 29, multiples of 30, multiples of 31, multiples of 32, multiples of 33, multiples of 34, multiples of 35, multiples of 36, multiples of 37, multiples of 38, multiples of 39, multiples of 40, multiples of 41, multiples of 42, multiples of 43, multiples of 44, multiples of 45, multiples of 46, multiples of 47, multiples of 48, multiples of 49, multiples of 50, multiples of 51, multiples of 52, multiples of 53, multiples of 54, multiples of 55, multiples of 56, multiples of 57, multiples of 58, multiples of 59, multiples of 60, multiples of 61, multiples of 62, multiples of 63, multiples of 64, multiples of 65, multiples of 66, multiples of 67, multiples of 68, multiples of 69, multiples of 70, multiples of 71, multiples of 72, multiples of 73, multiples of 74, multiples of 75, multiples of 76, multiples of 77, multiples of 78, multiples of 79, multiples of 80, multiples of 81, multiples of 82, multiples of 83, multiples of 84, multiples of 85, multiples of 86, multiples of 87, multiples of 88, multiples of 89, multiples of 90, multiples of 91, multiples of 92, multiples of 93, multiples of 94, multiples of 95, multiples of 96, multiples of 97, multiples of 98, multiples of 99, multiples of 100, multiples of 101, multiples of 102, multiples of 103, multiples of 104, multiples of 105, multiples of 106, multiples of 107, multiples of 108, multiples of 109, multiples of 110, multiples of 111, multiples of 112, multiples of 113, multiples of 114, multiples of 115, multiples of 116, multiples of 117, multiples of 118, multiples of 119, multiples of 120, multiples of 121, multiples of 122, multiples of 123, multiples of 124, multiples of 125, multiples of 126, multiples of 127, multiples of 128, multiples of 129, multiples of 130, multiples of 131, multiples of 132, multiples of 133, multiples of 134, multiples of 135, multiples of 136, multiples of 137, multiples of 138, multiples of 139, multiples of 140, multiples of 141, multiples of 142, multiples of 143, multiples of 144, multiples of 145, multiples of 146, multiples of 147, multiples of 148, multiples of 149, multiples of 150, multiples of 151, multiples of 152, multiples of 153, multiples of 154, multiples of 155, multiples of 156, multiples of 157, multiples of 158, multiples of 159, multiples of 160, multiples of 161, multiples of 162, multiples of 163, multiples of 164, multiples of 165, multiples of 166, multiples of 167, multiples of 168, multiples of 169, multiples of 170, multiples of 171, multiples of 172, multiples of 173, multiples of 174, multiples of 175, multiples of 176, multiples of 177, multiples of 178, multiples of 179, multiples of 180, multiples of 181, multiples of 182, multiples of 183, multiples of 184, multiples of 185, multiples of 186, multiples of 187, multiples of 188, multiples of 189, multiples of 190, multiples of 191, multiples of 192, multiples of 193, multiples of 194, multiples of 195, multiples of 196, multiples of 197, multiples of 198, multiples of 199, multiples of 200Tags: addition, multiple, multiplication
[+] Addition and Multiplication Tables (Times Tables)
Shows the color coded addition or multiplication table entries and answer for any 2 numbers 1-15.

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[+] Addition Equality Property
Demonstrates the Addition Equality Property

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[+] Addition of 3 or more numbers
This calculator performs addition with carrying and an addition grid for 3 or more numbers.

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Examples (1): 5Tags: addition, carrying
[+] Addition Property Of Inequality
Demonstrates the Addition Property Of Inequality

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[+] Additive Identity Property
Displays the line by line proof for the additive identity property

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Examples (5): additive identity, zero property, symmetric, transitive property, multiplicative inverseTags: proof, property
[+] Additive Inverse Property
[+] Associative Property
Demonstrates the associative property using 3 numbers.

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[+] Balancing Equations
Given 4 numbers, this will use the four operations: addition, subtraction, multiplication, or division to balance the equations if possible.

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Examples (1): 8,6,3,5
[+] Basic Math Operations
Given 2 numbers, this performs the following arithmetic operations:
* Addition (Adding) (+)
* Subtraction (Subtracting) (-)
* Multiplication (Multiplying) (x)
* Long division (Dividing) with a remainder (÷)
* Long division to decimal places (÷)
* Partial Sums (Shortcut Sums)
* Short Division
* Duplication and Mediation

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Examples (9): 9856*45, 765+98, 12365-992, 19654/28, partial sum 36523+98, partial 987524/246, 8765 minus 432, 876 times 986, 985 divided by 43Tags: addition, long division, multiplication, partial, remainder, subtraction
[+] Benchmark Fractions
Adds or Subtracts or Compares 2 fractions using estimating sums or estimating differences with benchmark fractions.

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Examples (2): 1/2+5/8, 4/5-1/3
[+] Ceiling
Calculates the ceiling of a number

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Examples (2): Ceiling(45.12367), [45.12367]
[+] Commutative Property
Demonstrates the commutative property of addition and the commutative property of multiplication using 3 numbers.

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[+] Comparison of Numbers
Compares two numbers and checks to see if they are equal to one another, if the first number is greater than the second number, or the first number is less than the second number. Minimum and maximum.

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Examples (9): 6=5, 9<7, compare 10 and 30, 13<28, 12?7, max(20,50), min(30,-60), 5 is greater than -3, 2 is less than 9Tags: compare, equal, greater than, less than
[+] Counting
Counts up from a number to another number using a factor
Counts down from one number to another number using a factor. Also known as skip counting.

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Examples (2): count down from 40 by 4, count backwards from 60 by 6
[+] Counting by Tens
Counts by Tens

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Examples (1): 98 tensTags: integer, tally
[+] Counting on a Number Line
Shows addition or subtraction by moving left or right on a number line.

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[+] Decompose Number Pairs
Decomposes a number into number pairs of sums.

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[+] Distributive Property
Demonstrates the distributive property using 3 numbers.

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[+] Division Equality Property Calculator
Demonstrates the Division Equality Property Calculator

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[+] Division Property Of Inequality
Demonstrates the Division Property Of Inequality

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[+] Duplication and Mediation
Multiplies two numbers using Duplication and Mediation

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Examples (1): 471*35
[+] Estimate Sums
Estimates the sum of 2 numbers.

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Examples (1): 145 + 23
[+] Estimating Reasonableness of Products
Given a product of 2 numbers and an estimated product, this will check to see if it is reasonable

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Examples (1): an order of 28 packages of paper at $3.50 eack cost a toatle of $98. reasonable or not reasonable?
[+] Even Numbers
Shows a set amount of even numbers and cumulative sum

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Examples (1): 250 even numbers
[+] Fibonacci Sequence
Generates a list of the first 100 Fibonacci numbers.

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Examples (2): 50 fibonacci numbers, fibonacci number 80Tags: fibonacci, generator, sequence
[+] Floor
Determines the floor of a number

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Examples (2): ]95.267[, floor(56.789)
[+] Fraction Cancellation Property
Demonstrates the Fraction Cancellation Property

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[+] Greatest Common Factor and Least Common Multiple
Given 2 or 3 numbers, the calculator determines the following:
* Greatest Common Factor (GCF) using Factor Pairs
* Rewrite Sum using the Distributive Property and factoring out the GCF
* Least Common Multiple (LCM) / Least Common Denominator (LCD) using Factor Pairs
* GCF using the method of Successive Division
* GCF using the Prime Factorization method
* Determine if the numbers are coprime and twin prime

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Examples (11): GCF of 25 and 30, GREATEST COMMON FACTOR 60,75, least common multiple of 50 AND 80, lcm 50,70, l.c.m. 80 and 95, gcf 50 + 75, g.c.f 50,100, GCF of 15 and 20 and 30, are 3 and 5 twin prime, are 20 and 29 coprime, lcd of 20 and 25Tags: division, greatest common factor, least common multiple, prime factorization
[+] Int Function
Determines the integer of a number

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Examples (1): int(6.5)
[+] Lattice Multiplication
Performs Lattice Multiplication or the Napiers Bones (Napier Rods) method of multiplication

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[+] Multiple Fractions (Addition or Ordering)
This adds 3 or more fractions or arranges a list of fractions from lowest to highest and highest to lowest (ordering fractions or sorting fractions)

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Examples (2): 1/2+3/4+5/8, 1/2,5/8,3/4Tags: addition, arrange fractions, fraction, least common multiple
[+] Multiplication Array
This allows you to enter pictorials using * symbols to represent multiplication

Features: CalculatorTags: array, multiplication
[+] Multiplication Comparison
[+] Multiplication Equality Property
Demonstrates the Multiplication Equality Property

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[+] Multiplication Property Of Inequality
Demonstrates the Multiplication Property Of Inequality

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[+] Multiplicative Comparison
[+] Multiplicative Identity Property
[+] Multiplicative Inverse Property
[+] Natural Numbers
Shows a set amount of natural numbers and cumulative sum

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Examples (1): 250 natural numbers
[+] Number Bonds
Adds or subtracts 2 numbers and using grouping by 10 or 100. Also called number bonds or addition facts. Multiplies two numbers using tape diagrams.

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Examples (3): 12+15, 11+7, 9*7
[+] Number Line
Counts from a point going left and right on a number line

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[+] Number Line Midpoint
Calculates a midpoint between 2 points on a number line or finds the second endpoint if one endpoint and midpoint are given.

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Examples (3): midpoint 2,5, midpoint of 2 and 6, mpt 3,5Tags: midpoint, number line, points
[+] Odd Numbers
Shows a set amount of odd numbers and cumulative sum

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Examples (1): 250 odd numbers
[+] Opposite Numbers
Given a positive or negative integer (n), this calculates the opposite number of n

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Examples (3): opposite of 20, opposite number of 5, opposite of -9Tags: number line, opposite
[+] Ordering Numbers
Given a list of numbers, this will order the list ascending (lowest to highest) or descending (highest to lowest)

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Examples (3): 1,3,5,8,12, 4< -2 < 3 < 8 < 5, 3 > 7 > 6 > 9 > -9Tags: ascending, descending, order
[+] Partial Quotient
Divides 2 numbers using the Partial Quotient

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Examples (1): 471/35
[+] Partial Sum
Calculates a partial sum for 2 numbers.

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Examples (1): 375+43
[+] Percent Math
Simplifies expressions involving numbers and percents with respect to addition and subtraction

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Examples (1): 60 + 35% - 10% + 40Tags: addition, percent, simplify, subtraction
[+] Prime Numbers
Shows up to 3000 prime numbers and a cumulative sum

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Examples (3): generate 30 prime numbers, generate composite numbers, show prime numbers
[+] Rational Number Subtraction
Subtracting 2 numbers, this shows an equivalent operations is adding the additive inverse. p - q = p + (-q)

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Examples (1): 15-5
[+] Reflexive Property
[+] Regrouping
Subtracts two numbers using regrouping

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Examples (1): 987-89
[+] Rounding
Rounds a number to the nearest number of your choice

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Examples (4): round 50,6, round 76 to 3, round (80,7), round 123 to nearest 7Tags: number, rounding, truncate
[+] Rounding to Decimal Places
Rounds a number to a select number of decimal places

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Examples (2): round 50,6, round 76 to 3 decimal placesTags: number, rounding, truncate
[+] Sales Tax
[+] Subtraction Equality Property
Demonstrates the Subtraction Equality Property

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[+] Subtraction Property Of Inequality
Demonstrates the Subtraction Property Of Inequality

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[+] Symmetric Property
[+] Tally Marks
Shows the tally mark representation (tallies) for a positive integer.

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Examples (2): Tally for 62, 59 talliesTags: integer, tally
[+] Ten Frame
Builds a ten frame (dot card) for a number and shows numbers more and less.

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Examples (0):
[+] Transitive Property
[+] Trichotomy Property
Demonstrates the Trichotomy Property with 2 numbers.

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[+] True False Equations
Determines if a set of addition and subtraction of numbers on each side of an equation are equivalent.

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Examples (3): 7 = 8 - 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2
[+] Truncate
Truncates a number to a specified number of decimal places. Truncates decimals.

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Examples (0):
[+] Unknown Number
Determines the unknown number needed to make an equation true.

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Examples (3): 9+?=12, 12=5+?, 12=9 - ?
[+] Whole Numbers
Shows a set amount of whole numbers and cumulative sum

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Examples (1): 250 whole numbers
[+] Zero Multiplication Property