About Fractions & Decimals
Mathematics grows by connecting definitions, patterns, models, calculations, and proof. This page builds the topic from basic ideas toward applications and deeper reasoning.
Fraction Meaning
Fractions represent ratios, parts, or division.
Learn MoreEquivalent Fractions
Different forms can represent the same value.
Learn MoreComparing
Fractions can be compared in several ways.
Learn MoreAdding Fractions
Fractions need equal-sized parts before adding.
Learn MoreMultiplying Fractions
Fraction multiplication scales one value by another.
Learn MoreDecimal Place Value
Decimals extend place value to the right.
Learn MorePercent
Percent means per hundred.
Learn MoreConverting Forms
Fractions, decimals, and percents can represent the same value.
Learn MoreFraction Meaning
They can describe portions, rates, measurements, and points on a number line.
Equivalent Fractions
Multiplying numerator and denominator by the same nonzero number keeps value unchanged.
Comparing
Common denominators, benchmarks, decimals, and number lines can all help.
Adding Fractions
A common denominator creates compatible pieces, after which numerators can be combined.
Multiplying Fractions
The numerators multiply together and the denominators multiply together.
Decimal Place Value
Tenths, hundredths, and thousandths behave like fractional powers of ten.
Percent
Twenty-five percent equals 25 out of 100, 0.25, and one quarter.
Converting Forms
Division converts many fractions to decimals, and multiplying a decimal by 100 converts it to percent.