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Math - Module One

Grade 2 Module 1: Sums and Differences to 100

Module 1 sets the foundation for students to master sums and differences to 20. Students subsequently apply these skills to fluently add one-digit to two-digit numbers at least through 100 using place value understanding, properties of operations, and the relationship between addition and subtraction.

Standards:

CCLS - Math: 2.OA.1

Category
Operations And Algebraic Thinking
Sub-Category
Represent And Solve Problems Involving Addition And Subtraction.
State Standard:
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.1

CCLS - Math: 2.OA.2

Category
Operations And Algebraic Thinking
Sub-Category
State Standard:
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers.

CCLS - Math: 2.NBT.5

Category
Number And Operations In Base Ten
Sub-Category
Use Place Value Understanding And Properties Of Operations To Add And Subtract.
State Standard:
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Click on the image to watch the lesson!