MA.2.NSO.1.2

Compose and decompose three-digit numbers in multiple ways using hundreds, tens and ones. Demonstrate each composition or decomposition with objects, drawings and expressions or equations.

Examples

The number 241 can be expressed as 2 hundreds + 4 tens + 1 one or as 24 tens + 1 one or as 241 ones.
General Information
Subject Area: Mathematics (B.E.S.T.)
Grade: 2
Strand: Number Sense and Operations
Date Adopted or Revised: 08/20
Status: State Board Approved

Related Courses

This benchmark is part of these courses.
5012040: Mathematics - Grade Two (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
7712030: Access Mathematics Grade 2 (Specifically in versions: 2014 - 2015, 2015 - 2018, 2018 - 2022, 2022 and beyond (current))
5012005: Foundational Skills in Mathematics K-2 (Specifically in versions: 2019 - 2022, 2022 and beyond (current))

Related Access Points

Alternate version of this benchmark for students with significant cognitive disabilities.
MA.2.NSO.1.AP.2: Compose and decompose two-digit numbers using tens and ones. Demonstrate each composition or decomposition with objects, drawings, expressions or equations.

Related Resources

Vetted resources educators can use to teach the concepts and skills in this benchmark.

Formative Assessments

Modeling Numbers with Base Ten Blocks:

Students use base ten blocks to model each of four numbers and then describe the number of hundreds, tens, and ones in each number.

Type: Formative Assessment

How Many Hundreds, Tens, and Ones?:

Students are asked to describe the number of hundreds, tens, and ones in four different three-digit numbers.

Type: Formative Assessment

Can You Write the Number?:

Students are asked to write numbers given descriptions of the number of hundreds, tens, and ones each contains.

Type: Formative Assessment

Showing One Hundred Equals Ten Tens:

Students are asked to compare ten tens to one hundred and justify their comparisons.

Type: Formative Assessment

Lesson Plan

Odds and Evens:

This resource helps students identify numbers as odd or even using a variety of methods including creating pairs, skip counting by two’s, using number lines, and arrays. It also leads them to understand that all even numbers can be written as a sum of equal addends and odds can be written as the sum of equal addends plus one.

This resource can be conducted as one lesson or can be spread over multiple mini sessions if needed as noted within this resource as Lesson 1 and Lesson 2.

 

Type: Lesson Plan

Original Student Tutorial

Bianca's Place Value Bubble Gum Factory - Part 1:

Come along on this adventure exploring the Base 10 place value system with 3-digit numbers in Bianca's Bubble Gum Factory, in this interactive tutorial.

Type: Original Student Tutorial

Perspectives Video: Teaching Idea

Decomposing Numbers into Tens and Ones:

After you try this knockout lesson idea, math misconceptions will be down for the count!

Download the CPALMS Perspectives video student note taking guide.

Type: Perspectives Video: Teaching Idea

MFAS Formative Assessments

Can You Write the Number?:

Students are asked to write numbers given descriptions of the number of hundreds, tens, and ones each contains.

How Many Hundreds, Tens, and Ones?:

Students are asked to describe the number of hundreds, tens, and ones in four different three-digit numbers.

Modeling Numbers with Base Ten Blocks:

Students use base ten blocks to model each of four numbers and then describe the number of hundreds, tens, and ones in each number.

Showing One Hundred Equals Ten Tens:

Students are asked to compare ten tens to one hundred and justify their comparisons.

Original Student Tutorials Mathematics - Grades K-5

Bianca's Place Value Bubble Gum Factory - Part 1:

Come along on this adventure exploring the Base 10 place value system with 3-digit numbers in Bianca's Bubble Gum Factory, in this interactive tutorial.

Student Resources

Vetted resources students can use to learn the concepts and skills in this benchmark.

Original Student Tutorial

Bianca's Place Value Bubble Gum Factory - Part 1:

Come along on this adventure exploring the Base 10 place value system with 3-digit numbers in Bianca's Bubble Gum Factory, in this interactive tutorial.

Type: Original Student Tutorial

Parent Resources

Vetted resources caregivers can use to help students learn the concepts and skills in this benchmark.