 ## Pre-Algebra Calculators: (47) lessons

Algebraic Expressions
This calculator builds algebraic expressions based on word representations of numbers using the four operators and the words that represent them(increased,product,decreased,divided,times) Also known as Mathematical phrases
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Approximate Square Root Using Exponential Identity
Calculates the square root of a positive integer using the Exponential Identity Method
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Babylonian Method
Determines the square root of a number using the Babylonian Method.
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Bakshali Method
Calculates the square root of a positive integer using the Bakshali Method
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Given two items with a price and quantity, this determines which is the better buy by comparing unit prices. Finds the better deal.
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Classify Fraction
Determines the if a fraction is proper, improper, or whole.
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Closest Fraction
Determines the closest fraction in a list to a target fraction
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Combined Ratio
Given a ratio a:b and a ratio b:c, this determines the combined ratio a:c
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Continued Fraction
Shows the continued fraction for a fraction
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Decompose Fraction
Decomposes a Fraction. Shows you the work behind decomposing a fraction
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Digit Product
Calculates a digit product for a number.
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Digit Sum
Calculates a digit sum and reduced digit sum for a number.
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Equivalent Fractions
Given a fraction, this will determine equivalent fractions
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Estimate Square Roots
Estimates the square root of a number
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Expanded Notation
Writes the expanded notation for a number.
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Factorization
Given a positive integer, this calculates the following for that number:
1) Factor pairs and prime factorization and prime power decomposition
2) Factors and Proper Factors 3) Aliquot Sum
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Fractions and Mixed Numbers
Given (improper fractions, proper fraction, mixed numbers, or whole numbers), this performs the following operations:
* Subtraction (Subtracting)
* Positive Difference (Absolute Value of the Difference)
* Multiplication (Multiplying)
* Division (Dividing: complex fraction division is included)
* Compare Fractions
* Simplifying of proper and improper fractions as well as mixed numbers. Fractions will be reduced down as far as possible (Reducing Fractions).
* Reciprocal of a Fraction
* Find all fractions between two fractions
* reduce a fraction
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Index Form
Writes a number using index form notation
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Integers
This lesson walks you through what integers are, how to write integers, integer notation, and what's included in integers
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Interval Counting
Evaluates a set of interval counting statements in the form a(b)c.
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Newton Method
Calculates the square root of a positive integer using the Newton Method
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Opposite Direction Distance
Word Problem calculator to measure distance between 2 people moving in opposite directions with rate and time solved for as well
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Order of Operations
Evaluates an expression using the order of operations, or PEMDAS or PEDMAS or BEDMAS or BODMAS
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Percentage Change
Calculates the percentage change between two values. Percentage Increase or Percentage Decrease
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Percentage-Decimal-Fraction Relations
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
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Place Value
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.
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Polynomial
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.
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Powers Of
Determines the powers of a number from 1 to n.
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Projectile Motion
Solves for time using a height and velocity of an object thrown up in the air
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Proportion
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 =,<,≤,>,≥
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Rational Numbers
This lesson walks you through what rational numbers are, how to write rational numbers, rational number notation, and what's included in rational numbers
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Ratios
* Simplifies a ratio of a:b
* Given a ratio in the form a:b or a to b, and a total population amount, this calculator will determine the expected value of A and B from the ratio.
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Real Numbers
This lesson walks you through what real numbers are, how to write real numbers, real numbers notation, and what's included in real numbers
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Repeating Decimal
Evaluates and simplifies a repeating decimal
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Roster Notation
Given a set of numbers, this displays the roster notation
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Signed Integer Operations
This performs a string of signed integer operations, either all addition and subtraction, or all multiplication and division.
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Simplest Exponent Form
This expresses repeating algebraic expressions such as 3*a*a*a*b*b into simplest exponent form.
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Square Root Table
Generates a square root table for the first (n) numbers rounded to (r) digits
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Square Roots and Exponents
Given a number (n), or a fraction (n/m), and/or an exponent (x), or product of up to 5 radicals, this determines the following:
* The square root of n denoted as √n
* The square root of the fraction n/m denoted as √n/m
* n raised to the xth power denoted as nx (Write without exponents)
* n raised to the xth power raised to the yth power denoted as (nx)y (Write without exponents)
* Product of up to 5 square roots: √abcde
* Write a numeric expression such as 8x8x8x8x8 in exponential form
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Standard Notation
Calculates the following:
* The numeric notation of word notation
* Standard notation of expanded notation
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Standard Notation
Displays the Standard notation of expanded notation
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Unit Cost
Calculates the unit cost based on a price and a quantity
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Unit Fraction
Determines the unit fraction for a fraction.
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What is a Fraction
This lesson walks you through what a fraction is and the different parts of a fraction.
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What is an Exponent
This lesson walks you through what an exponent is, the product rule for exponents, the quotient rule for exponents, the 0 power rule, the power of a power rule for exponents
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Word Notation
Calculates the following:
* The word notation of a number of numeric expression
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