Question

Which addition sentence show you how to find 16-9?

9+1=10, 10+5=15
9+1=10, 10+6=16
9+2=11, 11+6=17
9+1=10, 10+9=19

Answer 1

first you add 9+1=10 then 10-3=7.

Answer 2

I think it's the 3rd one