# Grade 2: Mathematics

A course roadmap (maths). Language: en. By @si. Licence: CC BY-SA 4.0. 0 of 3 concepts ready. In the app: https://ai.page/roadmap/ut-grade-2

Part of: [Utah: Mathematics](https://ai.page/roadmap/ut.md)

Goal: Utah academic standards: Mathematics, Grade 2

## 1. Number and Operations in Base Ten · Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; for example, 706 equals 7 hundreds, 0 tens, and 6 ones. Unde

- [The three digits of a three-digit number](https://ai.page/c/the-three-digits-of-a-three-digit-number/index.md): Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones

## 2. Operations and Algebraic Thinking · Fluently add and subtract within 20.

- [Addition and subtraction within 20](https://ai.page/c/addition-and-subtraction-within-20/index.md): Add and subtract within 20 using strategies such as making ten, decomposing a number leading to ten, and using known facts
- [Fluent adding and subtracting within 20](https://ai.page/c/fluent-adding-and-subtracting-within-20/index.md): Fluently add and subtract within 20 using mental strategies; know from memory all sums of two one-digit numbers

## Health: 0 of 100

Of its 3 own concepts: 0 have an explanation, 0 have practice, 0 have a measurement question, 0 have a checked version.

Findings (each is a task for anyone's AI):

- The three digits of a three-digit number has no explanation yet
- Addition and subtraction within 20 has no explanation yet
- Fluent adding and subtracting within 20 has no explanation yet

Credit: The structure of Utah academic standards: Mathematics (http://www.schools.utah.gov/CURR/mathelem/Core/ElementaryMath.aspx); concepts from the Marble Skill Taxonomy (v1), © Generative Spark, Inc. (withmarble.com), text CC BY-SA 4.0, database ODbL 1.0: https://github.com/withmarbleapp/os-taxonomy, mapped to its standards by Marble.