ILC 2nd Grade Mathematics: Unit 2 Adding and Subtracting within 100

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Course Repository

Grade Level

Course Format

Unit

License

CC BY

Course Description

This is unit 2 of 9 units. The sequence of units is available in the Read Me First Materials in each unit.

Section A: Add and Subtract
In this section, students analyze the structure of base-ten blocks and use them to support place-value reasoning. Students begin to think about two-digit numbers in terms of tens and ones.
Section B: Decompose to subtract
In this section, students subtract one- and two-digit numbers from two-digit numbers within 100.
Section C: Represent and Solve Story Problems
In this section, students solve one-step story problems that involve addition and subtraction within 100.

Standards

These instructional materials are available to assist educators in implementing Iowa’s Academic Standards. Curriculum leaders and teachers should review these instructional materials to ensure full implementation of Iowa’s Academic Standards in the local curriculum. Each module identifies standards that are addressed and assessed.

Prerequisites

None

SCED Code

Source Name

Illustrative Mathematics. (2021). K-5 Math version. Kendall Hunt Publishing. https://im.kendallhunt.com/k5/curriculum.html

Lead developer

Susan Steier

Course Updates