Subtract Integers fluently!

 $-7\ -\ 8\ =\ ?$  

Rewrite to addition (first answer), add integer (second answer)

• -15

• 15

•  $-7\ +\ \left(-8\right)$  
  

• 1

 $-4\ -\ 5\ =\ ?$  

Rewrite (Choice 1), Final answer (Second Answer).

•  $-4\ +\ \left(-5\right)$  
  

• -9

• -4 + 5

• 9

 $-1\ -\ 3\ =\ ?$  

• 2

• -2

• 4

• -4

• -17

• 3

 $2\ -\ 8\ =\ ?$  

• 6

• -6

• -2

• 2

 $1\ -\ 9\ =\ ?$  

• 8

• 10

• -8

• -10

 $-8\ -\ 1\ =\ ?$  

• 7

• -7

• -9

• 9

 $-3\ -\ 5\ =\ ?$  

• 8

• 2

• -2

• -8

 $-5\ -\ 7\ =\ ?$  

• 2

• -2

• 12

• -12

 $-10\ -\ 10\ =\ ?$  

• -20

• 0

• 20

• -1