Calculates the absolute difference between 2 numbers

Add, subtract, multiply or divide any two numbers with absolute value signs. Positive Difference.

Given an integer or decimal, this determines the precision and accuracy (scale)

Shows all addition and multiplication multiples up to 20 for a positive integer

Shows the color coded addition or multiplication table entries and answer for any 2 numbers 1-15.

Demonstrates the Addition Equality Property Numerical Properties

This calculator performs addition with carrying and an addition grid for 3 or more numbers.

Demonstrates the Addition Property Of Inequality. Numerical Properties

Displays the line by line proof for the additive identity property Numerical Properties

Demonstrates the Additive Inverse property using a number. A + (-A) = 0 Numerical Properties

Demonstrates the associative property using 3 numbers. Covers the Associative Property of Addition and Associative Property of Multiplication. Also known as the Associative Law of Addition and Associative Law of Multiplication Numerical Properties

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

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

Adds or Subtracts or Compares 2 fractions using estimating sums or estimating differences with benchmark fractions.

Calculates the ceiling of a number

Demonstrates the commutative property of addition and the commutative property of multiplication using 3 numbers. Numerical Properties

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.

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.

Counts by Tens

Shows addition or subtraction by moving left or right on a number line.

This calculator finds the total using groups of tens and leftover values.

Decomposes a number into number pairs of sums.

Demonstrates the distributive property using 3 numbers. Numerical Properties

Demonstrates the Division Equality Property Calculator Numerical Properties

Demonstrates the Division Property Of Inequality Numerical Properties

Multiplies two numbers using Duplication and Mediation

This calculator estimates a decimal.

Estimates a fraction using a benchmark fractions of 1/2.

Estimates the sum of 2 numbers.

Given a product of 2 numbers and an estimated product, this will check to see if it is reasonable

Shows a set amount of even numbers and cumulative sum

Generates a list of the first 100 Fibonacci numbers. Also shows how to generate the nth Fibonacci number using Binet's Formula

Determines the floor of a number

Demonstrates the Fraction Cancellation Property also known as Cancellation Property of Fractions Numerical Properties

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

Determines the integer of a number

Performs Lattice Multiplication or the Napiers Bones (Napier Rods) method of multiplication

Generates a list of the first 100 Lucas numbers.

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)

This allows you to enter pictorials using * symbols to represent multiplication

Evaluates a multiplication comparison

Demonstrates the Multiplication Equality Property Numerical Properties

Demonstrates the Multiplication Property Of Inequality Numerical Properties

Performs a multiplicative comparison word problem.

Demonstrates the Multiplicative Identity property using a number. Numerical Properties

Demonstrates the Multiplicative Inverse property using a number. Numerical Properties

Shows a set amount of natural numbers and cumulative sum

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.

Counts from a point going left and right on a number line

Calculates a midpoint between 2 points on a number line or finds the second endpoint if one endpoint and midpoint are given.

Shows a set amount of odd numbers and cumulative sum

Given a positive or negative integer (n), this calculates the opposite number of n

Given a list of numbers, this will order the list ascending (lowest to highest or least to greatest) or descending (highest to lowest or greatest to least)

This calculator determines the ordinal number of an integer

Divides 2 numbers using the Partial Quotient

Calculates a partial sum for 2 numbers.

Simplifies expressions involving numbers and percents with respect to addition and subtraction

Calculates the predecessor number to a given number

Shows up to 3000 prime numbers and a cumulative sum

Subtracting 2 numbers, this shows an equivalent operations is adding the additive inverse. p - q = p + (-q)

Demonstrates the reflexive property of congruence using a number. Numerical Properties

Subtracts two numbers using regrouping

Rounds a number to the nearest number of your choice

Rounds a number to a select number of decimal places

Given a sales price and a total bill, this calculates the sales tax amount and sales tax percentage

This calculator shades a grid for a decimal.

Demonstrates the Subtraction Equality Property Numerical Properties

Demonstrates the Subtraction Property Of Inequality Numerical Properties

Calculates the successor number to a given number

Demonstrates the Symmetric property using a number. Numerical Properties

Shows the tally mark representation (tallies) for a positive integer.

Builds a ten frame (dot card) for a number and shows numbers more and less.

Demonstrates the Transitive property of equality using a number. Numerical Properties

Demonstrates the Trichotomy Property with 2 numbers. Numerical Properties

Determines if a set of addition and subtraction of numbers on each side of an equation are equivalent. Also known as true or false equations

Truncates a number to a specified number of decimal places. Truncates decimals.

Determines the unknown number needed to make an equation true.

Shows you the various examples and definition of a vinculum

Shows a set amount of whole numbers and cumulative sum

Demonstrates the Zero Multiplication property using a number. Also called the Zero Product Property. Numerical Properties