Subtracting Rational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What does it mean to subtract 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 two negative rational numbers?

Back

To subtract two negative rational numbers, you can convert the subtraction into addition by changing the sign of the second number. For example, -a - (-b) = -a + b.

Front

What is the result of -2.4 - 1.2?

Back

-3.6

Front

What is the result of -7 - (-12)?

Back

5

Front

How do you subtract mixed numbers?

Back

To subtract mixed numbers, convert them to improper fractions, perform the subtraction, and then convert back to a mixed number if necessary.

Front

What is the result of -1 1/3 - (-2 1/3)?

Back

1

Front

What is the result of 5.5 - 2.75?

Back

2.75

Front

What is the result of ⅛ - ¼?

Back

-1/8

Front

What is the rule for subtracting fractions with different denominators?

Back

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