Mary found 75 seashells on the beach she gave Sarah some of her seashells. she has 13 seashells left. how many seashells did she give to Sarah.

She gave 62 shells to Sarah.

Step-by-step explanation:

You need to do 75 minus 13 to get 62.

62

Step-by-step explanation:

75 seashells she got - 13 left = 62 given away

If you want to be sure, you can check by adding the ones left to the ones given away, so 62+13=75 so it's right