Unit 5, Lesson 22
Dividamos números enteros entre 0.1 y entre 0.01
Grado 5
Preparation
Lesson Narrative
In prior lessons, students represented decimals to the thousandths with diagrams, words, numbers, and expressions. They also added, subtracted, and multiplied decimals using place value understanding, properties of operations, and relationships between operations. In this lesson, students begin to work with decimals and division. They divide whole numbers by one tenth and one hundredth and notice and explain patterns they observe. Students apply their understanding of division as “how many groups” to hundredths grids where the entire grid represents one whole. This allows students to visualize how many tenths or hundredths are in one or several wholes while also preparing them to find quotients of more complex decimals in future lessons.
- Representation
None
- Explain (orally and in writing) strategies for dividing a whole number by 0.1 or 0.01 and critique (orally) explanations.
- Generalize (orally and in writing) that dividing a whole number by 0.1 is equivalent to multiplying it by 10, and dividing a whole number by 0.01 is equivalent to multiplying it by 100.
- Dividamos números enteros entre una décima y entre una centésima.
Required Preparation
None
Teacher Reflection Questions
Reflect on how comfortable your students are asking questions of you and of each other. What can you do to encourage students to ask more questions?