Fractions Addition and Subtraction

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator (part) and 'b' is the denominator (whole).

Front

What does it mean to add fractions?

Back

Adding fractions involves combining the parts represented by the fractions. If the denominators are the same, add the numerators. If they are different, find a common denominator first.

Front

What does it mean to subtract fractions?

Back

Subtracting fractions involves taking away the part represented by one fraction from another. If the denominators are the same, subtract the numerators. If they are different, find a common denominator first.

Front

How do you find a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions. It is often the least common multiple (LCM) of the denominators.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two numbers is the smallest number that is a multiple of both numbers.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as 5/4.

Front

What is a mixed number?

Back

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

Front

How do you convert an improper fraction to a mixed number?

Back

To convert an improper fraction to a mixed number, divide the numerator by the denominator. The quotient is the whole number, and the remainder is the new numerator.

Front

What is the process for adding mixed numbers?

Back

To add mixed numbers, first add the whole numbers together, then add the fractions. If the fraction sum is improper, convert it to a mixed number.

Front

What is the process for subtracting mixed numbers?

Back

To subtract mixed numbers, first subtract the whole numbers, then subtract the fractions. If the fraction from the second mixed number is larger, borrow from the whole number.