MAFS.2.NBT.2.7Archived Standard

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Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
General Information
Subject Area: Mathematics
Grade: 2
Domain-Subdomain: Number and Operations in Base Ten
Cluster: Level 2: Basic Application of Skills & Concepts
Cluster: Use place value understanding and properties of operations to add and subtract. (Major Cluster) -

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Date Adopted or Revised: 02/14
Content Complexity Rating: Level 2: Basic Application of Skills & Concepts - More Information
Date of Last Rating: 02/14
Status: State Board Approved - Archived

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.

Related Resources

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

Formative Assessments

Adding Within 1,000:

Students are asked to solve an addition problem within 1,000.

Type: Formative Assessment

Subtracting within 1,000:

Students are asked to solve a subtraction problem within 1,000.

Type: Formative Assessment

Mr. Ford’s Money:

Students are asked to solve a subtraction problem involving money.

Type: Formative Assessment

Place Value Strategies for Addition and Subtraction:

Students explain another student's written strategy for adding and written strategy for subtracting three-digit numbers.

Type: Formative Assessment

Lesson Plans

The Kingdom of Ten:

This is a lesson about the power of grouping numbers into ones, tens, and hundreds. The story describes the terrible dilemma faced by Lady Di as she attempts to feed the large number of guests that arrive for King Arthur's birthday party. The knights attempt to help her count the guests by arranging the people in different ways until a final solution is found by using the power of ten and place value. The children are then given the opportunity to count people arriving from other lands by using place value blocks. Finally, the children make a number and have just a few more guests arrive from the land of Addington. They can then fill up their place value houses and watch as they must shift or regroup the people to make them fit into the proper houses.

Type: Lesson Plan

How Much Do We Need to Order?:

This is an inquiry lesson in which the students will be posed a real world problem and be given the task to come up with a way to gather their data and solve the problem.

Type: Lesson Plan

Pirate Party! - Let's Make a Ten:

This lesson teaches students how to apply the "make-a-ten" strategy to addition problems involving two-digit addends.

Type: Lesson Plan

Roll and Add Two Digit Numbers:

In this lesson students will use two dice to roll and add two-digit numbers. Students will also use their numbers to create and solve one-step addition word problems.

Type: Lesson Plan

Cookie Contest:

This MEA asks students to decide which factors are important in choosing the best cookie in a cookie contest. Students will take on the role of cookie critics to provide feedback to a teacher whose grade level is deciding which cookie to use for a fundraiser. They will rank order their choices from the best to worst cookie. Students will provide a detailed written explanation for how they decided to rank factors and their solution. They will show their work while adding up to 4 two-digit numbers to calculate the total number of votes.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.

Type: Lesson Plan

Strategy-Based Instruction In Three-digit Subtraction:

Students will learn how to subtract three-digit subtraction problems using various subtraction strategies (expanded form and place value). These strategies help to build conceptual understanding, which will benefit in the development of their understanding of the standard algorithm.

Type: Lesson Plan

Problem-Solving Task

How Many Days Until Summer Vacation?:

The purpose of the task is to allow children an opportunity to subtract a three-digit number including a zero that requires regrouping. The solutions show how students can solve this problem before they have learned the traditional algorithm.

Type: Problem-Solving Task

Tutorial

Subtraction by Regrouping:

This 8-minute video demonstrates how to perform subtraction with regrouping. The presenter uses base-10 blocks to explain the rationale and to make a visual connection with the standard algorithm. The examples involve 2-digit and 3-digit numbers.

Type: Tutorial

STEM Lessons - Model Eliciting Activity

Cookie Contest:

This MEA asks students to decide which factors are important in choosing the best cookie in a cookie contest. Students will take on the role of cookie critics to provide feedback to a teacher whose grade level is deciding which cookie to use for a fundraiser. They will rank order their choices from the best to worst cookie. Students will provide a detailed written explanation for how they decided to rank factors and their solution. They will show their work while adding up to 4 two-digit numbers to calculate the total number of votes.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.

MFAS Formative Assessments

Adding Within 1,000:

Students are asked to solve an addition problem within 1,000.

Mr. Ford’s Money:

Students are asked to solve a subtraction problem involving money.

Place Value Strategies for Addition and Subtraction:

Students explain another student's written strategy for adding and written strategy for subtracting three-digit numbers.

Subtracting within 1,000:

Students are asked to solve a subtraction problem within 1,000.

Student Resources

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

Problem-Solving Task

How Many Days Until Summer Vacation?:

The purpose of the task is to allow children an opportunity to subtract a three-digit number including a zero that requires regrouping. The solutions show how students can solve this problem before they have learned the traditional algorithm.

Type: Problem-Solving Task

Parent Resources

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

Problem-Solving Task

How Many Days Until Summer Vacation?:

The purpose of the task is to allow children an opportunity to subtract a three-digit number including a zero that requires regrouping. The solutions show how students can solve this problem before they have learned the traditional algorithm.

Type: Problem-Solving Task