This picture shows four plus six equals 10. Four green bricks and six orange bricks makes 10 bricks altogether. Which of these three pictures shows two plus eight equals 10?
This picture has 10 bricks. Five of them are green. And five of them are orange. This picture shows five plus five equals 10. The second picture has two green bricks and eight orange bricks. So this is the picture which shows that two plus eight equals 10. Did you notice that this picture only has nine bricks. This picture shows that two plus seven equals nine.
So the picture which shows two plus eight equals 10 is the second one.