Grade 7 Math - Subtracting Negative Fractions

Front

What is subtracting a negative number?

Back

Subtracting a negative number is the same as adding its positive counterpart. For example, a - (-b) = a + b.

Front

How do you subtract fractions with different denominators?

Back

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

Front

What is the first step in subtracting negative fractions?

Back

The first step is to convert the subtraction of a negative fraction into addition. For example, a - (-b) becomes a + b.

Front

Calculate: -2 5/6 - (-1 3/4)

Back

-2 5/6 - (-1 3/4) = -2 5/6 + 1 3/4 = -1 1/12.

Front

Calculate: 1 2/5 - (-3 3/4)

Back

1 2/5 - (-3 3/4) = 1 2/5 + 3 3/4 = 5 3/20.

Front

Calculate: -3 3/5 - 4 2/5

Back

-3 3/5 - 4 2/5 = -8.

Front

What is a mixed number?

Back

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

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 9/4.

Front

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

Back

To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place that over the original denominator.

Front

What is the process of finding a common denominator?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators of the fractions you are working with.