Add and subtract 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 negative rational numbers?

Back

To add two negative rational numbers, you add their absolute values and keep the negative sign.

Front

What is the distance between two points on a number line?

Back

The distance between two points P and Q on a number line is given by the absolute value of the difference between their values: |P - Q|.

Front

What is the result of -6.5 + (-0.5)?

Back

-7

Front

How do you subtract a negative number from a positive number?

Back

Subtracting a negative number is the same as adding its absolute value.

Front

What is -40 + 15.05?

Back

-24.95

Front

How do you add fractions with different denominators?

Back

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

Front

What is the result of -1/3 + (-1/6)?

Back

-1/2

Front

How do you find the sum of a negative and a positive rational number?

Back

To find the sum, compare their absolute values. Subtract the smaller absolute value from the larger one and keep the sign of the number with the larger absolute value.

Front

What is the result of -6.23 + 7.5?

Back

1.27