7th Grade Math Review: The Number System

Front

What is the distance between two points on a number line?

Back

The distance between two points on a number line is the absolute value of the difference between their coordinates.

Tags

CCSS.7.NS.A.1C

Front

What is absolute value?

Back

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

Tags

CCSS.6.NS.C.7C

Front

What is the sum of two numbers?

Back

The sum of two numbers is the result of adding them together.

Tags

CCSS.1.OA.A.1

Front

What two numbers combine to have a sum of zero?

Back

Two numbers that are opposites, such as +5 and -5, combine to have a sum of zero.

Tags

CCSS.7.NS.A.1B

Front

How do you find the absolute value of a number?

Back

To find the absolute value of a number, remove any negative sign. For example, | -3 | = 3.

Tags

CCSS.6.NS.C.7C

Front

What does it mean for a number to have a greater absolute value?

Back

A number has a greater absolute value if it is further away from zero on the number line.

Tags

CCSS.6.NS.C.7C

Front

What is the formula for finding the distance between two points A and B on a number line?

Back

Distance = |A - B|.

Tags

CCSS.7.NS.A.1C

Front

If point A is at -11 and point B is at 9, what is the distance between them?

Back

Distance = |-11 - 9| = | -20 | = 20.

Tags

CCSS.7.NS.A.1C

Front

What is the result of adding a negative number to a positive number?

Back

The result depends on the absolute values; if the positive number is larger, the result is positive, and if the negative number is larger, the result is negative.

Tags

CCSS.7.NS.A.1C

Front

What is the number line?

Back

A number line is a straight line that represents numbers as points at equal intervals.

Tags

CCSS.2.MD.B.6