This Problem Set is a part of the Lesson 22, Unit 4, Grade 6. A checkerboard has squares on it. If one grain of rice is put on the first square, grains of rice on the second square, grains of rice on the third square, grains of rice on the fourth square, and so on (doubling each time), complete the table to show how many grains of rice are on each square. Write your answers in exponential form on the table below.