Respuesta :

zmcever

Answer:

9 + 10 = 19

1 + 2 = 3

Step-by-step explanation:

To add 2 to 1, look at a number line and start at the point 1 and go two numbers to the right to end at 3.

ochoangelyn

Answer:

I believe its 22

Step-by-step explanation:

9+10=19

19+1=20

20+2=22