MA.2.AR.1.1

Solve one- and two-step addition and subtraction real-world problems.

Clarifications

Clarification 1: Instruction includes understanding the context of the problem, as well as the quantities within the problem.

Clarification 2: Problems include creating real-world situations based on an equation.

Clarification 3: Addition and subtraction are limited to sums up to 100 and related differences. Refer to Situations Involving Operations with Numbers (Appendix A).

General Information
Subject Area: Mathematics (B.E.S.T.)
Grade: 2
Strand: Algebraic Reasoning
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.AR.1.AP.1: Solve one-step addition and subtraction real-world problems within 20 using objects.

Related Resources

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

Formative Assessments

Compare (Bigger Unknown) Word Problems:

Students are asked to solve two Compare (Bigger Unknown) word problems: one involving the word more and one involving the word fewer.

Type: Formative Assessment

Solving a Two-Step Word Problem: Eating Grapes:

Students are asked to solve a two-step word problem that combines a Compare (Bigger Unknown) problem and a Compare (Smaller Unknown) problem.

Type: Formative Assessment

Compare (Smaller Unknown) Word Problems:

Students are asked to solve two Compare (Smaller Unknown) word problems: one involving the word more and one involving the word fewer.

Type: Formative Assessment

Solving a Two-Step Word Problem: Marbles in a Bag:

Students are asked to solve a two-step word problem that combines a Put Together (Result Unknown) problem and a Take From (Result Unknown) problem.

Type: Formative Assessment

Word Problems with Result Unknown:

Students are asked to solve three word problems: Add To (Result Unknown), Take From (Result Unknown), and Put Together/Take Apart (Total Unknown).

Type: Formative Assessment

Solving a Two-Step Word Problem: Going Fishing:

Students are asked to solve a two-step word problem that combines an Add To (Result Unknown) problem and a Compare (Difference Unknown) problem.

Type: Formative Assessment

One, Two, Three Problems to Solve:

Students are asked to solve three word problems: Put Together (Addend Unknown), Take From (Change Unknown), Add to (Change Unknown).

Type: Formative Assessment

How Many More and How Many Fewer?:

Students are asked to solve two Compare (Difference Unknown) word problems: a how many more and a how many fewer variation.

Type: Formative Assessment

Both Addends Unknown:

Students are asked to solve a Put Together/Take Apart (Both Addends Unknown) word problem and explain their strategies.

Type: Formative Assessment

Add To and Take From (Start Unknown):

Students are asked to solve two word problems: Add To (Start Unknown) and Take From (Start Unknown).

Type: Formative Assessment

Lesson Plans

Table Top Problem:

The Junior League needs the students' help to determine which table rental company to use for their Charity Auction. With a tight budget, limited time, and a mistake in the order, students must create a procedure for determining the best rental company, write an explanation about their procedure, and present their recommendations to the class.

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

Sweet Donut Shop:

Everyone loves donuts. It is the students' task to help the Sweet Donut Shop determine what will be their newest donut shape- square, circle, or triangle. Based on the criteria provided, students will use their mathematical skills to determine what the donut will be.

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

Officer Buckle Can Help Our Schools!:

After reading, Officer Buckle and Gloria the students will be given a problem showing different ways safety problems have been solved at area schools. Through ranking, they will have to determine which manner was the most effective.

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

Tutorials

Repeated Addition Example:

In this tutorial you will learn how to solve a word problem by creating a chart and adding the same number many times.

Type: Tutorial

Solving word problems within 100:

This Khan Academy tutorial, called, "sports on a die" explains the pitfalls of relying on key words in a word problem. Students solve a problem by writing a missing addend addition equation and solve with the standard algorithm for subtracting two digit numbers.

Type: Tutorial

Subtracting within 100 using the standard algorithm:

In this tutorial video from Khan Academy, called "Using crayons", explore subtracting within 100 using the standard algorithm, as well as a bar diagram.

Type: Tutorial

Solving a word problem using the standard algorithm for subtraction:

In this video tutorial from Khan Academy called "losing tennis balls", explore solving a two-step subtraction word problem using the standard algorithm.

Type: Tutorial

Adding two-digit numbers using the standard algorithm:

In this tutorial video from Khan Academy, called "Fence posts for horses", explore adding a two digit number to a two digit number using the standard algorithm

Type: Tutorial

Adding and subtracting on number line word problems:

In this video tutorial from Khan Academy, explore using a number line solve word problems involving more than two numbers.

Type: Tutorial

STEM Lessons - Model Eliciting Activity

Officer Buckle Can Help Our Schools!:

After reading, Officer Buckle and Gloria the students will be given a problem showing different ways safety problems have been solved at area schools. Through ranking, they will have to determine which manner was the most effective.

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.

Sweet Donut Shop:

Everyone loves donuts. It is the students' task to help the Sweet Donut Shop determine what will be their newest donut shape- square, circle, or triangle. Based on the criteria provided, students will use their mathematical skills to determine what the donut will be.

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.

Table Top Problem:

The Junior League needs the students' help to determine which table rental company to use for their Charity Auction. With a tight budget, limited time, and a mistake in the order, students must create a procedure for determining the best rental company, write an explanation about their procedure, and present their recommendations to the class.

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

Add To and Take From (Start Unknown):

Students are asked to solve two word problems: Add To (Start Unknown) and Take From (Start Unknown).

Both Addends Unknown:

Students are asked to solve a Put Together/Take Apart (Both Addends Unknown) word problem and explain their strategies.

Compare (Bigger Unknown) Word Problems:

Students are asked to solve two Compare (Bigger Unknown) word problems: one involving the word more and one involving the word fewer.

Compare (Smaller Unknown) Word Problems:

Students are asked to solve two Compare (Smaller Unknown) word problems: one involving the word more and one involving the word fewer.

How Many More and How Many Fewer?:

Students are asked to solve two Compare (Difference Unknown) word problems: a how many more and a how many fewer variation.

One, Two, Three Problems to Solve:

Students are asked to solve three word problems: Put Together (Addend Unknown), Take From (Change Unknown), Add to (Change Unknown).

Solving a Two-Step Word Problem: Eating Grapes:

Students are asked to solve a two-step word problem that combines a Compare (Bigger Unknown) problem and a Compare (Smaller Unknown) problem.

Solving a Two-Step Word Problem: Going Fishing:

Students are asked to solve a two-step word problem that combines an Add To (Result Unknown) problem and a Compare (Difference Unknown) problem.

Solving a Two-Step Word Problem: Marbles in a Bag:

Students are asked to solve a two-step word problem that combines a Put Together (Result Unknown) problem and a Take From (Result Unknown) problem.

Word Problems with Result Unknown:

Students are asked to solve three word problems: Add To (Result Unknown), Take From (Result Unknown), and Put Together/Take Apart (Total Unknown).

Student Resources

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

Tutorials

Repeated Addition Example:

In this tutorial you will learn how to solve a word problem by creating a chart and adding the same number many times.

Type: Tutorial

Solving word problems within 100:

This Khan Academy tutorial, called, "sports on a die" explains the pitfalls of relying on key words in a word problem. Students solve a problem by writing a missing addend addition equation and solve with the standard algorithm for subtracting two digit numbers.

Type: Tutorial

Subtracting within 100 using the standard algorithm:

In this tutorial video from Khan Academy, called "Using crayons", explore subtracting within 100 using the standard algorithm, as well as a bar diagram.

Type: Tutorial

Solving a word problem using the standard algorithm for subtraction:

In this video tutorial from Khan Academy called "losing tennis balls", explore solving a two-step subtraction word problem using the standard algorithm.

Type: Tutorial

Adding two-digit numbers using the standard algorithm:

In this tutorial video from Khan Academy, called "Fence posts for horses", explore adding a two digit number to a two digit number using the standard algorithm

Type: Tutorial

Adding and subtracting on number line word problems:

In this video tutorial from Khan Academy, explore using a number line solve word problems involving more than two numbers.

Type: Tutorial

Parent Resources

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

Tutorials

Solving word problems within 100:

This Khan Academy tutorial, called, "sports on a die" explains the pitfalls of relying on key words in a word problem. Students solve a problem by writing a missing addend addition equation and solve with the standard algorithm for subtracting two digit numbers.

Type: Tutorial

Subtracting within 100 using the standard algorithm:

In this tutorial video from Khan Academy, called "Using crayons", explore subtracting within 100 using the standard algorithm, as well as a bar diagram.

Type: Tutorial

Solving a word problem using the standard algorithm for subtraction:

In this video tutorial from Khan Academy called "losing tennis balls", explore solving a two-step subtraction word problem using the standard algorithm.

Type: Tutorial

Adding two-digit numbers using the standard algorithm:

In this tutorial video from Khan Academy, called "Fence posts for horses", explore adding a two digit number to a two digit number using the standard algorithm

Type: Tutorial

Adding and subtracting on number line word problems:

In this video tutorial from Khan Academy, explore using a number line solve word problems involving more than two numbers.

Type: Tutorial