ILC 2nd Grade Mathematics: Unit 7 Adding and Subtracting within 1,000

Use the filters or browse to find courses available for download, then click into a course to view details. A local school administrator can choose to download courses to use locally in their online learning management system.

Course Repository

Grade Level

Course Format

Unit

License

CC BY

Course Description

This is unit 7 of 9 units. The sequence of units is available in the Read Me First Materials in each unit.

Section A:.Add and Subtract Within 1,000 Without Composition or Decomposition
In this section, students add and subtract within 1,000 using strategies where they do not make or break apart a ten or a hundred.
Section B: Add Within 1,000 Using Place Value Strategies
In this section students are introduced to the idea that when adding three-digit numbers, it is sometimes necessary to compose (make) a hundred from 10 tens. Throughout the section students use base-ten blocks, base-ten diagrams, expanded form, and other equations to build conceptual understanding and show place-value reasoning.
Section C: Subtract Within 1,000 Using Place Value Strategies
Similar to their work in the previous section, students subtract numbers within 1,000 using place value strategies that involve decomposing (taking apart) a ten, a hundred, or both.

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

Molly McCarty

Course Updates