Adding Integers

Adding Integers

Learn the Rules for Adding Positive and Negative Numbers

If the signs are the same...

• Add &

• Keep the Sign

• Example: - 4 + -5 = -9    or     3 + 2 = 5

If the signs are different....

• Subtract &

• Take the sign of the larger number

Poll

 $-4\ +\ -2\ =\ ?$  

• -6

• 6

• -2

• 2

Poll

 $-2\ +\ -7\ =\ ?$  

• -9

• 9

• -5

• 5

Remember: When the signs are the SAME add and keep the signs

Try these.....

Multiple Choice

-5 + -2

• -7

• 7

• -3

• 3

Multiple Choice

3 + 6

• 9

• -9

• -3

• 3

Multiple Choice

-20 + -16

• -36

• 36

• -4

• 4

Multiple Choice

45 + 10

• 55

• -55

• 35

• -35

Poll

-5 + 1

• -4

• 4

• -6

• 6

Poll

-6 + 10

• 4

• -4

• -16

• 16

Remember: If the signs are different SUBTRACT. Take the sign of the larger absolute value

Let's try some more

Multiple Choice

-2 + 10 (remember to take the sign of the larger absolute value)

• 8

• -8

• -12

• 12

Poll

How are we feeling? Select one answer and one meme

Open Ended

Answer the following questions:

1. -5 + 2
2. 10 + -6
3. -5 + -2
4. 6 + 10
5. -4 + -3

Multiple Choice

-10 + 5 (remember to take the sign of the larger absolute value)

• -5

• 5

• -15

• 15

Multiple Choice

-8 + 3 (remember to take the sign of the larger absolute value)

• -5

• 5

• 11

• -11

Multiple Choice

16 + -8 (remember to take the sign of the larger absolute value)

• 8

• -8

• 24

• -24

Poll

How are we feeling?

Open Ended

Answer the following questions:

1. -5 +-4
2. 10 + 2
3. -25 + 5
4. 6 + -2
5. -14 + 10