Word Problems with 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

What is the process to subtract rational numbers?

Back

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

Front

How do you multiply two rational numbers?

Back

To multiply two rational numbers, multiply the numerators together and the denominators together.

Front

What is the rule for dividing rational numbers?

Back

To divide by a rational number, multiply by its reciprocal (flip the second fraction and multiply).

Front

If Angelo has $5.50 and spends $1.05 on a cookie and $1.45 on a drink, how much does he have left?

Back

$3.00

Front

Aaron has $20 and spends $1.50 on 2 Cokes, $5.50 on a sandwich, and $2.25 on chips. How much does he have left?

Back

$9.25

Front

A submarine is 150 feet below sea level and an airplane is 375 feet above sea level. What is the distance between them?

Back

525 feet.

Front

If the temperature drops from 10°F to 24°F, what is the new temperature?

Back

-14°F.

Front

Your bank account balance is -$31.00. After getting paid $195 and paying a $75 bill, what is your new balance?

Back

$89.00.