3rd-Grade Fractions

A fraction represents a part of a whole and is expressed as a ratio of two numbers, the numerator (top number) and the denominator (bottom number).

The numerator is the top number in a fraction that indicates how many parts of the whole are being considered.

The denominator is the bottom number in a fraction that indicates the total number of equal parts the whole is divided into.

To find equivalent fractions, multiply or divide both the numerator and the denominator of a fraction by the same non-zero number.

Equivalent fractions are different fractions that represent the same value or proportion of a whole.

To add fractions with the same denominator, add the numerators together and keep the denominator the same.

To subtract fractions with the same denominator, subtract the numerators and keep the denominator the same.

To add fractions with different denominators, first find a common denominator, convert the fractions, and then add the numerators.

A mixed number is a whole number combined with a proper fraction, such as 2 1/2.

To convert an improper fraction to a mixed number, divide the numerator by the denominator to find the whole number, and use the remainder as the new numerator.