Question

sara played target 80. starting with 57, she made the equatic 57 + 3 + 20 = 80 use saras work to complete the equation. 57 + ? = 80

Explanation:

Step1: Sum the known addends

$3 + 20 = 23$

Step2: Verify the total sum

$57 + 23 = 80$

Answer:

23