Adding/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

How do you add rational numbers with different denominators?

Back

To add rational numbers with different denominators, first find a common denominator, convert each fraction, and then add the numerators.

Front

What is the process for subtracting rational numbers?

Back

To subtract rational numbers, find a common denominator, convert the fractions, and then subtract the numerators.

Front

What is the first step in adding -21 7/16 and 13 1/4?

Back

Convert 13 1/4 to an improper fraction or a fraction with a common denominator with -21 7/16.

Front

What is the result of -21 7/16 + 13 1/4?

Back

-8 3/16.

Front

How do you subtract fractions with different denominators?

Back

Find a common denominator, convert the fractions, and then subtract the numerators.

Front

What is the result of 1/8 - 4/5?

Back

-27/40.

Front

What is the importance of finding a common denominator?

Back

Finding a common denominator is crucial for accurately adding or subtracting fractions.

Front

What is the result of 23 3/4 - 12 5/16?

Back

11 7/16.

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 the result over the original denominator.