Math 7: Lesson 8 Adding 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 two rational numbers with different denominators?

Back

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

Front

Back

0

Front

Back

Front

Back

Front

Back

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 the result over the original denominator.

Front

Back

Front

What is the rule for adding two negative numbers?

Back

When adding two negative numbers, the result is always negative and you add their absolute values.

Front

What is the rule for adding a positive number and a negative number?

Back

When adding a positive number and a negative number, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.