Add:

Count the first group of fish. The first group has 3 fish.

Count the second group of fish. The second group has 5 fish.

To find the sum of 3 and 5, count all the fish together, like this:

There are 8 fish, so 3 + 5 = 8.

Add:

Count the first group of fish. The first group has 10 fish.

Count the second group of fish. The second group has 2 fish.

To find the sum of 10 and 2, count all the fish together, like this:

here are 12 fish, so 10 + 2 = 12.

Add:

Count the first group of fish. The first group has 8 fish.

Count the second group of fish. The second group has 6 fish.

To find the sum of 8 and 6, count all the fish together, like this:

There are 14 fish, so 8 + 6 = 14.