2nd Grade Math Unit 3

Big Idea:

Solve one‐step and multi‐step word problems involving two digit and three digit addition and subtraction with and without regrouping.

Student Expectations:

Priority TEKS

2.4(C) [Readiness] Solve one‐step and multi‐step word problems involving addition and subtraction within 1,000 using a variety of strategies based on place value, including algorithms

Focus TEKS

2.4(B) [Supporting] Add up to four two‐digit numbers and subtract two‐digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations

2.4(D) [Readiness] Generate and solve problem situations for a given mathematical number sentence involving addition and subtraction of whole numbers within 1,000

Ongoing TEKS

2.2(A) [Supporting] Use concrete and pictorial models to compose and decompose numbers up to 1,200 in more than one way as a sum of so many thousands, hundreds, tens, and ones

2.4(A) [Supporting] Recall basic facts to add and subtract within 20 with automaticity

Student Learning Targets:

• I will use strategies to solve real world problems involving addition and subtraction.
• I will use strategies based on place value to add and subtract multi-digit whole numbers.

Essential Questions:

• What strategy can be used to solve addition or subtraction problems?
• How do you write a number sentence to represent a word problem?

Extra Information:

Adopted Textbook: Pearson - enVision Math

District Grading Policy

Texas Gateway Online Resource Center

Addition

Week 1: Two digit without regrouping

Week 2: Two digit With regrouping

Week 3: Three digit With regrouping

Subtraction

Week 1: Two digit without regrouping

Week 2: Two digit With regrouping

Week 3: Three digit With regrouping