This Application Problem is a part of the Lesson 3, Unit 1, Grade 1. Alex had 9 marbles in his hand. He hid his hands behind his back and put some in one hand and some in the other. How many marbles might be in each hand? Use pictures or numbers to draw a number bond to show your idea. This problem is designed as a bridge from the previous lesson, which focused on reasoning about embedded numbers and finding various decompositions.