Answer:
1st, 3rd, and 6th
Explanation:
It's basically saying that Emma made 25 cookies. We don't know how many she gave to her mom, and split the rest with her 4 friends. We're/You're supposed to find an equation that matches it.
Since she gave (unknown number) to her mom, it's subtraction.
And it says "she split the remaining cookies evenly among 4 friends." So, we can assume that it's division.
25 - c, then divided by 4.