Adding and subtracting positive and negative integers

Adding Integers

100

-3 + 5 =

 2

200

10 + (-8)

 2

300

-15 + - 16

 -31

400

20 + - 10

 10

500

-15 + 78

 63

Subtracting Integers

100

-5 - 3

 -8

200

10 - ( -3)

 13

300

-21 - (-10)

 -11

400

31 - 10

 21

500

-15 - ( -21)

 6

Adding 3 or more integers

100

- 5 +(-3)=

2

200

-7+4=

3

300

8+(-5)=

3

400

-3+(-9)=

-3

500

-12+9=

-3

Subtracting 3 or more integers

100

-6+(-8)=

-14

200

10+(-2=

8

300

- 4+6=

2

400

15 +(-7) =

8

500

-9+5=

-4

Adding and Subtracting Integers

100

8-(-3)=

11

200

-6-4=

-10

300

10-(-2)=

12

400

7-9=

-2

500

-12-3 =

-15