fraction - a number that names part of a whole or part of a group, equivalent fraction - two or more fractions that name the same part or amount but have different numerators and denominators, unit fraction - one part of a whole when the whole is divided into equal parts of the whole, numerator - top number in a fraction that tells how many equal parts of the whole are being counted, denominator - the bottom number of a fraction that tells how many equal parts are in the whole, capacity - the amount of liquid a container can hold, liter/milliliter - metric units of capacity, mass - the amount of matter in an object, gram/kilogram - metric units of mass, length - the measure of how long, how tall, or how wide an object is, centimeter - a metric unit of measurement for length, inch - standard unit of measurement for length, weight - how heavy an object is, ounce/pound - standard units of weight,

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