Respuesta :
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!
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
+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