Adding and Subtracting Fractions and Decimals

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

Front

What is a decimal?

Back

A decimal is a way of expressing numbers that are not whole, using a point to separate the whole number part from the fractional part.

Front

How do you add fractions with the same denominator?

Back

Add the numerators together and keep the denominator the same. For example, 1/4 + 2/4 = (1+2)/4 = 3/4.

Front

How do you subtract fractions with the same denominator?

Back

Subtract the numerators and keep the denominator the same. For example, 3/5 - 1/5 = (3-1)/5 = 2/5.

Front

What is the process to add fractions with different denominators?

Back

Find a common denominator, convert the fractions, then add the numerators. For example, 1/2 + 1/3 = 3/6 + 2/6 = 5/6.

Front

What is the process to subtract fractions with different denominators?

Back

Find a common denominator, convert the fractions, then subtract the numerators. For example, 3/4 - 1/2 = 3/4 - 2/4 = 1/4.

Front

What is a mixed number?

Back

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

Front

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

Back

Multiply the whole number by the denominator, add the numerator, and place that over the original denominator. For example, 2 1/2 = (2*2 + 1)/2 = 5/2.

Front

What is the sum of 7.9 and 3.47?

Back

11.37.

Front

What is the difference of 7.9 and 3.47?

Back

4.43.