Colorado Academic Standards (CAS)
CO.5.1. Number Sense, Properties, and Operations
5.1.1. The decimal number system describes place value patterns and relationships that are repeated in large and small numbers and forms the foundation for efficient algorithms. Students can:
5.1.1.b. Read, write, and compare decimals to thousandths. (CCSS: 5.NBT.3)
5.1.1.b.i. Read and write decimals to thousandths using base-ten numerals, number names, and expanded form. (CCSS: 5.NBT.3a)
5.1.2. Formulate, represent, and use algorithms with multi-digit whole numbers and decimals with flexibility, accuracy, and efficiency. Students can:
5.1.2.c. Add, subtract, multiply, and divide decimals to hundredths. (CCSS: 5.NBT.7)
5.1.2.c.i. Use concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. (CCSS: 5.NBT.7)
5.1.2.c.ii. Relate strategies to a written method and explain the reasoning used. (CCSS: 5.NBT.7)