Math State Test Integers

Negative + Negative = ??

• Positive

• Negative

• It Depends

What equation is modeled?

• 15 + 25 = -10

• 15 + -25 = -10

• -10 + 15 = -10

• -25 + 15 = -10

Look at the number line.

• –2 + 4 =  –2

• –2 + (–4) =  –6

• 4 + (–6) =  –2

• 4 + (–2) =  6

Use the counters to find the sum of the integers. 

• -5

• -7

• 5

• 7

Use the counters to find the sum of the integers. 

• 17

• -2

• -1

• -17

(-9) + 9

• 18

• -18

• 0

• 81

(- 9) + 7

• -2

• 2

• 16

• -16

7 + (-14)

• 7

• 21

• -21

• -7

-8 + 3 =

• 5

• -5

• 8

• -8

1 + -9

• -8

• 9

• 8

• 1