Rational Number Review

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, |5| = 5 and |-5| = 5.

Front

What is the absolute value of -14.25?

Back

| -14.25 | = 14.25.

Front

What are opposites in terms of rational numbers?

Back

Two numbers that are the same distance from zero but on opposite sides of the number line. For example, 3 and -3 are opposites.

Front

What is the distance between the points (2, 3) and (2, -2)?

Back

The distance is 5 units.

Front

What is the y-axis in a coordinate plane?

Back

The y-axis is the vertical number line in a coordinate plane.

Front

What is the x-axis in a coordinate plane?

Back

The x-axis is the horizontal number line in a coordinate plane.

Front

How do you find the distance between two points on a number line?

Back

Subtract the smaller number from the larger number. For example, the distance between 3 and -2 is |3 - (-2)| = |3 + 2| = 5.

Front

What is the absolute value of -9?

Back

| -9 | = 9.

Front

If a number is positive, what is its absolute value?

Back

The absolute value of a positive number is the number itself. For example, |7| = 7.

Front

If a number is negative, what is its absolute value?

Back

The absolute value of a negative number is the positive version of that number. For example, |-4| = 4.