Review Unit 2 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

To add two rational numbers with different signs, subtract the absolute values and take the sign of the number with the larger absolute value.

Front

What is the sum of -3.85 and 7.88?

Back

4.03

Front

What is the result of -3.85 + 7.88 - 10.45?

Back

-6.42

Front

How can you visualize the addition of -4.6 to a number on a number line?

Back

Start at the number and move left 4.6 spaces.

Front

Which expression gives the greatest value: s - t, s + t, or t - s?

Back

t - s gives the greatest value.

Front

Back

It represents the situation where there are 5 3/4 cups of sugar in a container before using 1/4 cup to make cookies.

Front

What is the final value when you walk 2.5 blocks to school and then walk 2.5 blocks back home?

Back

The final value is zero.

Front

What happens to the temperature when it increases from -5 degrees to 5 degrees?

Back

The temperature increases by 10 degrees.

Front

If you have 3.5 cups of soup and eat all of it, how many cups do you have left?

Back

You have 0 cups left.