Adding and Subtracting Integers

When subtracting two integers ...

• add them together

• change the operation into addition and the second number's sign

• ignore the signs and subtract

• it will always be negative

Tags

CCSS.7.NS.A.1

CCSS.7.NS.A.3

When ADDing two integers with the SAME SIGN ....

• add and keep the same sign

• subtract and keep the same sign

• add and change the sign

• subtract and change the sign

Tags

CCSS.7.NS.A.1

CCSS.7.NS.A.3

-5 + 7 =

• 12

• -2

• 2

• -12

Tags

CCSS.6.NS.C.5

12 + (-3) =

• 9

• 15

• -9

• -15

Tags

CCSS.6.NS.C.5

-6 -10 =

• -4

• 4

• -16

• 16

Tags

CCSS.6.NS.C.5

7 - (-13) =

• 20

• -20

• 6

• -6

Tags

CCSS.6.NS.C.5

-3 - (-7) =

• 10

• 4

• -10

• -4

Tags

CCSS.6.NS.B.3

22 - (-25) + 8 =

• 5

• 11

• 37

• 55

-18 - 20 - (- 38) =

• 0

• -40

• -76

• 76

In the Sahara Desert one day it was 136⁰F. In the Gobi Desert a temperature of -50⁰F was recorded. What is the difference between these two temperatures?

• 86⁰F

• -86⁰F

• 186⁰F

• -186⁰F