Fractions
Fraction Calculator
Add, subtract, multiply and divide with a fast answer and optional step-by-step teaching.
Simplify Fractions
Get a fraction in lowest terms, with optional step-by-step teaching.
Fraction to Decimal
Convert a fraction to an exact decimal, with repeating digits marked by a bar.
Decimal to Fraction
Convert a terminating decimal to a simplified fraction, with optional place-value teaching.
Mixed Number Calculator
Add, subtract, multiply, and divide mixed numbers.
Adding Fractions
Add two fractions, simplify the answer, and learn the common-denominator steps.
Number Sense: Factors & Multiples
GCF Calculator
Find the greatest common factor of two whole numbers, with factor lists and the Euclidean algorithm.
LCM Calculator
Find the least common multiple of two whole numbers, with three teaching methods.
Prime Factorization Calculator
Write a whole number as a product of prime numbers.
Expanded Form
Coming soon
Operations
Decimals & Percentages
Decimal Learning Tool
Add, subtract, multiply, and divide decimals, with repeating decimals marked, place value, and Ace hints.
Percentage Calculator
Find a percent of a number, compare a part and whole, or calculate percent change.
Fraction to Percent
Convert a fraction to a percent, with optional steps and practice.
Percent to Fraction
Convert a percent to a simplified fraction, with optional steps and practice.