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 signs?

Back

When adding two rational numbers with different signs, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.

Front

What is the sum of -40 and 15.05?

Back

-24.95

Front

What is the sum of 9 and -6.73?

Back

2.27

Front

What is the sum of 34.5 and -7?

Back

27.5

Front

What is the sum of -4.2 and 3.3?

Back

-0.9

Front

What is the sum of -2.61 and -6.88?

Back

-9.49

Front

What is the rule for adding two positive rational numbers?

Back

When adding two positive rational numbers, simply add their absolute values together.

Front

What is the rule for adding two negative rational numbers?

Back

When adding two negative rational numbers, add their absolute values together and keep the negative sign.

Front

What happens when you add a positive number to a negative number?

Back

The result depends on the absolute values; if the positive number is larger, the result is positive, and if the negative number is larger, the result is negative.