Operations 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 negative rational numbers?

Back

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

Front

What is the result of -2.61 + (-6.88)?

Back

-9.49

Front

How do you find the difference between two heights given in feet?

Back

Subtract the lower height from the higher height.

Front

If Anna's volleyball team won by 8 points, lost by 2 points, and won again by 4 points, how do you calculate the total points?

Back

Add the points won and subtract the points lost: 8 - 2 + 4 = 10.

Front

What is the product of two fractions -3/8 and 4/5?

Back

Multiply the numerators and the denominators: (-3 * 4) / (8 * 5) = -12/40 = -3/10.

Front

What happens to your score if you catch a fish worth 10 points and a crab worth -5 points?

Back

Catching a fish adds 10 points, while catching a crab subtracts 5 points from your score.

Front

If Raegan catches 2 fish and 5 crabs, how do you calculate her total score?

Back

Total score = (2 fish * 10 points) + (5 crabs * -5 points) = 20 - 25 = -5.

Front

What is the absolute value of a rational number?

Back

The absolute value of a rational number is its distance from zero on the number line, regardless of direction.

Front

How do you multiply two negative rational numbers?

Back

When multiplying two negative rational numbers, the product is positive.