This Problem Set is a part of the Lesson 11, Unit 2, Grade 6. Students use estimation and place value to determine the placement of the decimal point in products and to determine that the size of the product is relative to each factor. Students recognize that the sum of the number of decimal digits in the factors yields the decimal digits in the product. To complete this lesson, students need large poster paper and markers so that they can present their detailed solutions to the Exploratory Challenge.