This Problem Set is a part of the Lesson 1, Unit 6, Grade 4. In this lesson, students use metric measurement and see tenths in relation to one whole in the context of 1 kilogram, 1 meter, and 1 centimeter. Using bags of rice, each weighing 1/10 kilogram, students see that the weight of 10 bags is equal to 1 kilogram, and learn that 1/10 kilogram can also be expressed as 0.1 kilogram. Then they represent tenths between 0 and 1 on the number line and with tape diagrams and write statements of equivalence in unit, fraction, and decimal forms (for example, 3 tenths = 3/10 = 0.3).