Operations with Rational Numbers-STAAR REVIEW

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 for subtracting rational numbers?

Back

To subtract rational numbers, find a common denominator, convert the fractions, 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 rational numbers, multiply by the reciprocal of the divisor.

Front

If a stock price starts at $37 and decreases by $3, what is the new price?

Back

$34

Front

If the temperature is 10°F below zero and rises by 17°F, what is the new temperature?

Back

7°F

Front

How many batches of cookies can be made with 12 cups of flour if each batch requires 2/3 cups?

Back

18 batches

Front

If Tina lives 2 ¼ miles from the library and Sonya lives 3 ½ miles, how much further does Sonya live?

Back

1 ¼ miles further

Front

A roller coaster starts at 25 feet above ground, climbs 76 feet, drops 82 feet, climbs 110 feet, and drops 108 feet. What is its final elevation?

Back

4 feet below the starting point.