Adding and Subtracting Integers

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero.

Front

What does it mean to add integers?

Back

Adding integers involves combining their values. If both integers are positive, the result is positive. If both are negative, the result is negative. If one is positive and one is negative, subtract the smaller absolute value from the larger absolute value and take the sign of the integer with the larger absolute value.

Tags

CCSS.7.NS.A.1C

Front

What does it mean to subtract integers?

Back

Subtracting integers is the same as adding the opposite. For example, to subtract a negative integer, you add its positive counterpart.

Tags

CCSS.7.NS.A.1B

Front

What is the result of -4 - (-2)?

Back

-4 - (-2) is the same as -4 + 2, which equals -2.

Tags

CCSS.7.NS.A.1C

Front

How do you represent a depth below sea level using integers?

Back

Depth below sea level is represented by negative integers. For example, -40 feet indicates 40 feet below sea level.

Tags

CCSS.6.NS.C.5

Front

If Emily is at -40 feet and swims up 10 feet, what is her new position?

Back

-40 + 10 = -30 feet, meaning she is now 30 feet below sea level.

Tags

CCSS.7.NS.A.1C

Front

What is the sum of -23, -7, and 5?

Back

-23 + (-7) + 5 = -25.

Tags

CCSS.7.NS.A.1C

Front

What is -14 + (-3)?

Back

-14 + (-3) = -17.

Tags

CCSS.7.NS.A.1C

Front

What is the result of -7 - 2?

Back

-7 - 2 = -9.

Tags

CCSS.7.NS.A.1C

Front

What is the rule for adding two negative integers?

Back

When adding two negative integers, the result is negative and you add their absolute values.

Tags

CCSS.7.NS.A.1C