---
title: Adding within 100 (no regrouping)
created: '2026-05-26'
updated: '2026-05-26'
type: lesson_topic
subject: math
tags:
- math
- grade-2
- homeschool
- ccss
standard: 2.NBT.A, 2.NBT.B, 2.OA.A
phase: 2
phase_name: "Addition & Subtraction to 100 (Weeks 7\u201314)"
weeks:
- 7
source: ''
---
# Adding within 100 (no regrouping)
Second grade math topic covering adding within 100 (no regrouping). Part of Phase 2 (Addition & Subtraction to 100 (Weeks 7–14)).
## Key Concepts
Place-value alignment, mental addition of tens
## Standards
2.NBT.A, 2.NBT.B, 2.OA.A
## Prerequisites
[[place-value-tens-ones]], [[comparing-ordering-numbers]], [[addition-facts-to-20]], [[subtraction-facts-to-20]], [[phase-1-review-assessment]]
---
*Generated from curriculum data* ^[[raw/curriculum/math]]