The Second Grade Standards Edition Unit 3 (Operations with Multi-Digit Numbers) intends student understanding of addition and subtraction within 1,000. This unit begins a focus on skip counting multiples of 10 and 100. Multiplication is introduced and the commutative property is integrated.
The Second Grade Standards Edition Unit 3 (Operations with Multi-Digit Numbers) builds on previous learning extending understanding of addition and subtraction within 1,000. Skill development proceeds to mental math with an understanding of place value and operations. Regrouping is extended using manipulatives, visual cues, and TouchPoints. Instruction includes the Concrete-Representational-Abstract continuum. Problem solving strategies including number sentences, logic, estimation, pictorial models, tables and charts and patterns to build the foundation for multiplication.