Respuesta :

z0mba

Answer: She can first add 20 to 51, 51+20=71, then she can add 9, 71+9=80.

So 51 + 29 = 80

Step-by-step explanation: Hope this helps!

amagnus03
51
+29

1+9=10

Carry the 1 over the 5 and leave the 0 below the 9

Then it’s 5+2=7 plus that one above the five making it 8

So the answer is 80