Absolute DifferenceCalculates the absolute difference between 2 numbers
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Watch the VideoAbsolute ValueAdd, subtract, multiply or divide any two numbers with absolute value signs. Positive Difference.
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Watch the VideoAccuracy and PrecisionGiven an integer or decimal, this determines the precision and accuracy (scale)
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Watch the VideoAddition and Multiplication MultiplesShows all addition and multiplication multiples up to 20 for a positive integer
CalculatorAddition 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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Watch the VideoAddition Equality PropertyDemonstrates the Addition Equality Property
Numerical Properties
CalculatorAddition of 3 or more numbersThis calculator performs addition with carrying and an addition grid for 3 or more numbers.
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Watch the VideoAddition Property Of InequalityDemonstrates the Addition Property Of Inequality.
Numerical Properties
CalculatorAdditive Identity PropertyDisplays the line by line proof for the additive identity property
Numerical Properties
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Watch the VideoAdditive Inverse PropertyDemonstrates the Additive Inverse property using a number. A + (-A) = 0
Numerical Properties
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Watch the VideoAssociative PropertyDemonstrates 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
CalculatorBalancing EquationsGiven 4 numbers, this will use the four operations: addition, subtraction, multiplication, or division to balance the equations if possible.
CalculatorBasic Math OperationsGiven 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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Watch the VideoBenchmark FractionsAdds or Subtracts or Compares 2 fractions using estimating sums or estimating differences with benchmark fractions.
CalculatorCeilingCalculates the ceiling of a number
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Watch the VideoCommutative PropertyDemonstrates the commutative property of addition and the commutative property of multiplication using 3 numbers.
Numerical Properties
CalculatorComparison of NumbersCompares 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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Watch the VideoCountingCounts 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.
CalculatorCounting by TensCounts by Tens
CalculatorCounting on a Number LineShows addition or subtraction by moving left or right on a number line.
CalculatorCounting with Groups of 10 and LeftoversThis calculator finds the total using groups of tens and leftover values.
CalculatorDecompose Number PairsDecomposes a number into number pairs of sums.
CalculatorDistributive PropertyDemonstrates the distributive property using 3 numbers.
Numerical Properties
CalculatorDivision Equality Property CalculatorDemonstrates the Division Equality Property Calculator
Numerical Properties
CalculatorDivision Property Of InequalityDemonstrates the Division Property Of Inequality
Numerical Properties
CalculatorDuplication and MediationMultiplies two numbers using Duplication and Mediation
CalculatorEstimate DecimalsThis calculator estimates a decimal.
CalculatorEstimate FractionEstimates a fraction using a benchmark fractions of 1/2.
CalculatorEstimate SumsEstimates the sum of 2 numbers.
CalculatorEstimating Reasonableness of ProductsGiven a product of 2 numbers and an estimated product, this will check to see if it is reasonable
CalculatorEven NumbersShows a set amount of even numbers and cumulative sum
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Watch the VideoFibonacci SequenceGenerates a list of the first 100 Fibonacci numbers.
Also shows how to generate the nth Fibonacci number using Binet's Formula
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Watch the VideoFloorDetermines the floor of a number
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Watch the VideoFraction Cancellation PropertyDemonstrates the Fraction Cancellation Property also known as Cancellation Property of Fractions
Numerical Properties
CalculatorGreatest Common Factor and Least Common MultipleGiven 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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Watch the VideoInt FunctionDetermines the integer of a number
CalculatorLattice MultiplicationPerforms Lattice Multiplication or the Napiers Bones (Napier Rods) method of multiplication
CalculatorLucas NumbersGenerates a list of the first 100 Lucas numbers.
CalculatorMultiple 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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Watch the VideoMultiplication ArrayThis allows you to enter pictorials using * symbols to represent multiplication
CalculatorMultiplication ComparisonEvaluates a multiplication comparison
CalculatorMultiplication Equality PropertyDemonstrates the Multiplication Equality Property
Numerical Properties
CalculatorMultiplication Property Of InequalityDemonstrates the Multiplication Property Of Inequality
Numerical Properties
CalculatorMultiplicative ComparisonPerforms a multiplicative comparison word problem.
CalculatorMultiplicative Identity PropertyDemonstrates the Multiplicative Identity property using a number.
Numerical Properties
CalculatorMultiplicative Inverse PropertyDemonstrates the Multiplicative Inverse property using a number.
Numerical Properties
CalculatorNatural NumbersShows a set amount of natural numbers and cumulative sum
CalculatorNumber BondsAdds or subtracts 2 numbers and using grouping by 10 or 100. Also called number bonds or addition facts. Multiplies two numbers using tape diagrams.
CalculatorNumber LineCounts from a point going left and right on a number line
CalculatorNumber Line MidpointCalculates 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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Watch the VideoOdd NumbersShows a set amount of odd numbers and cumulative sum
CalculatorOpposite NumbersGiven a positive or negative integer (n), this calculates the opposite number of n
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Watch the VideoOrdering NumbersGiven 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)
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Watch the VideoOrdinal NumberThis calculator determines the ordinal number of an integer
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Watch the VideoPartial QuotientDivides 2 numbers using the Partial Quotient
CalculatorPartial SumCalculates a partial sum for 2 numbers.
CalculatorPercent MathSimplifies expressions involving numbers and percents with respect to addition and subtraction
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Watch the VideoPredecessorCalculates the predecessor number to a given number
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Watch the VideoPrime NumbersShows up to 3000 prime numbers and a cumulative sum
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Watch the VideoRational Number SubtractionSubtracting 2 numbers, this shows an equivalent operations is adding the additive inverse. p - q = p + (-q)
CalculatorReflexive PropertyDemonstrates the reflexive property of congruence using a number.
Numerical Properties
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Watch the VideoRegroupingSubtracts two numbers using regrouping
CalculatorRoundingRounds a number to the nearest number of your choice
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Watch the VideoRounding to Decimal PlacesRounds a number to a select number of decimal places
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Watch the VideoSales TaxGiven a sales price and a total bill, this calculates the sales tax amount and sales tax percentage
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Watch the VideoShading DecimalsThis calculator shades a grid for a decimal.
CalculatorSubtraction Equality PropertyDemonstrates the Subtraction Equality Property
Numerical Properties
CalculatorSubtraction Property Of InequalityDemonstrates the Subtraction Property Of Inequality
Numerical Properties
CalculatorSuccessorCalculates the successor number to a given number
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Watch the VideoSymmetric PropertyDemonstrates the Symmetric property using a number.
Numerical Properties
CalculatorTally MarksShows the tally mark representation (tallies) for a positive integer.
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Watch the VideoTen FrameBuilds a ten frame (dot card) for a number and shows numbers more and less.
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Watch the VideoTransitive Property of EqualityDemonstrates the Transitive property of equality using a number.
Numerical Properties
CalculatorTrichotomy PropertyDemonstrates the Trichotomy Property with 2 numbers.
Numerical Properties
CalculatorTrue False EquationsDetermines if a set of addition and subtraction of numbers on each side of an equation are equivalent.
Also known as true or false equations
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Watch the VideoTruncateTruncates a number to a specified number of decimal places. Truncates decimals.
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Watch the VideoUnknown NumberDetermines the unknown number needed to make an equation true.
CalculatorVinculumShows you the various examples and definition of a vinculum
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Watch the VideoWhole NumbersShows a set amount of whole numbers and cumulative sum
CalculatorZero Multiplication PropertyDemonstrates the Zero Multiplication property using a number. Also called the Zero Product Property.
Numerical Properties
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