1.OA.A.2

Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

 
14 Lesson(s)
   

Using 3 or More Addends to Make a Meal

1st Grade Math » Unit: Problem Solving Addition
1st Grade Math » Unit: Problem Solving Addition
Carrie Clark
Gilbert, IA
Environment: Rural
 
Big Idea:

Using the theme of a very YUMMY Thanksgiving meal, students will plan their own meal and figure out the cost of it.

 
Favorites (12)
 
Resources (14)
 
Reflections (1)
pumpkin pie
   

Make a Bunny

1st Grade Math » Unit: Solving 3 Addend Problems
1st Grade Math » Unit: Solving 3 Addend Problems
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Incorporate both 1.OA.1's Make 10 strategy focus AND 1.OA.A.2's focus on adding 3 addends as students work to solve word problems.

Standards:
 
Favorites (18)
 
Resources (15)
 
Reflections (1)
bunny
   

Math Fact Sorting

1st Grade Math » Unit: Solving 3 Addend Problems
1st Grade Math » Unit: Solving 3 Addend Problems
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Students work to solve multiple 3 part number sentences and determine if they are equal or not! Students practice using less than, equal to and greater than language!

 
Favorites (4)
 
Resources (17)
 
Reflections (1)
image
   

Word Problems with 3 Addends Part III

1st Grade Math » Unit: Word Problems
1st Grade Math » Unit: Word Problems
Jennifer Moon
Oklahoma City, OK
Environment: Urban
 
Big Idea:

Following multi-step directions is a difficult task for first graders. This lesson will allow additional practice to solve word problems. I want them to pick the strategy that works best for them to join three numbers.

Standards:
 
Favorites (8)
 
Resources (20)
 
Reflections (2)
lesson
   

What's the Sum

1st Grade Math » Unit: Blending
1st Grade Math » Unit: Blending
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

Old McDonald had a farm and all of his animals came out to play. How many animals are there in all? Today the students will find out!

 
Favorites (7)
 
Resources (25)
 
Reflections (1)
lesson image
   

Dice Rollin': Associative Property at its Most Fun!

1st Grade Math » Unit: Solving 3 Addend Problems
1st Grade Math » Unit: Solving 3 Addend Problems
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Students apply known facts to help them add 3 numbers together in this game oriented lesson!

Standards:
 
Favorites (13)
 
Resources (18)
icone autosaisie
   

Addition Strategies

1st Grade Math » Unit: Single Digit Addition and Subtraction
1st Grade Math » Unit: Single Digit Addition and Subtraction
Lisa Murdock
Lakeland, FL
Environment: Urban
 
Big Idea:

Let’s put it all together! In this lesson students will use addition strategies to solve word problems.

Standards:
 
Favorites (5)
 
Resources (14)
 
Reflections (1)
lesson image
   

Word Problems with 3 Addends Part II

1st Grade Math » Unit: Word Problems
1st Grade Math » Unit: Word Problems
Jennifer Moon
Oklahoma City, OK
Environment: Urban
 
Big Idea:

My students have worked on joining 3 addends using drawings, objects, and equations. This lesson will supply concentrated practice on solving 3 addend equations with sums less than or equal to 20.

 
Favorites (4)
 
Resources (17)
 
Reflections (2)
lesson
   

Keep it Simple

1st Grade Math » Unit: Solving 3 Addend Problems
1st Grade Math » Unit: Solving 3 Addend Problems
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Introduce students to the concept of "simplifying" as they find the friendly number sentences that help them solve 3 addend number sentences!

 
Favorites (9)
 
Resources (14)
 
Reflections (1)
photo 2
   

Word problems with 3 Addends Part I

1st Grade Math » Unit: Word Problems
1st Grade Math » Unit: Word Problems
Jennifer Moon
Oklahoma City, OK
Environment: Urban
 
Big Idea:

Following multi-step directions is a difficult task for first graders. This introductory lesson will teach them how to bring a word problem to life and help them visualize what needs to be done to solve by joining three numbers.

Standards:
 
Favorites (8)
 
Resources (16)
 
Reflections (1)
lesson
   

George and Martha: Missing Parts

1st Grade Math » Unit: Solving 3 Addend Problems
1st Grade Math » Unit: Solving 3 Addend Problems
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Connect to a classic children's story and extend student thinking! Students apply their understanding of 3 addend equations to solve for the missing part of a story problem.

Standards:
 
Favorites (9)
 
Resources (13)
 
Reflections (1)
51dejjfsqwl
   

10: A Helpful Best Friend

1st Grade Math » Unit: Solving 3 Addend Problems
1st Grade Math » Unit: Solving 3 Addend Problems
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Students solve problems and look for how 10 can help them make it easier!

 
Favorites (3)
 
Resources (12)
 
Reflections (1)
friends logo
   

Find a Match!

1st Grade Math » Unit: Solving 3 Addend Problems
1st Grade Math » Unit: Solving 3 Addend Problems
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Students practice equality and 3 addend number sentences in this fun, interactive partner game!

 
Favorites (2)
 
Resources (13)
 
Reflections (1)
find a match
   

Counting and Combining Groups of Objects

1st Grade Math » Unit: Counting by Groups
1st Grade Math » Unit: Counting by Groups
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

Today your students will solve story problems that ask them to find totals the involve groups of 2 and 4.

 
Favorites (5)
 
Resources (26)
 
Reflections (1)
lesson image
Common Core Math
 
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