Grab These Resources if You are Teaching How to Estimate Sums!

Fern Smith's Classroom Ideas Rounding to Estimate the Sum Task Cards, Center Games and Color By Code Printables at TeacherspayTeachers, TpT.
 Estimate the Sums
A quick way to estimate the sum of two numbers is to round each number and then add the rounded numbers. {See yesterday's post for help on rounding.} It is likely that this won't be the exact answer but it may be close enough for some purposes. Students need this mental math not only for future math classes and math procedures, but it is also a life skill. Were you over charged at the furniture store? Did you receive the correct amount of change back from the waitress? Problem solving extends to all aspects of their world.

Tips to introduce your lesson...
How to estimate a sum by rounding:
  • Round each number in the problem.
  • Add the rounded numbers together, mental math is even better.
More reasons WHY you would use rounding to estimate the sum:
  • Check to see if you have about enough money to buy something.
  • Get a ball park idea if they have a correct answer to a problem. Is 500 an intelligent answer for 23 + 31?
Estimate Sums Center Game

You will love how easy it is to prepare this 3rd Grade Go Math 1.3 Estimate Sums Center Games for your class. My students LOVED Math Centers and your students will too! You can dedicate one of your math centers, math workstations, as a math skill only center. By changing out the skill each week, your students already know the directions for using the math center. 

Estimate Sums Center Game

Your math center can be placed in a folder with the folder cover and the student can take the center back to their seat if classroom space is limited. Your students will enjoy the freedom of center games while learning and reviewing important skills at the same time! This 3rd Grade Go Math 1.Estimate Sums Center Games is perfect for assessment grades for 3rd Grade Go Math Chapter 1 Lesson 3!

Estimate Sums Center Game


Once your students know the expectations of using center games, your math skills math center can run all year with different skills from a variety of over 1,500+ of my center games! Click here to see all my center games.

Estimate Sums Center Game
When it comes to the ease of prepping this Estimate Sums Center Games Resource, all of the pieces are rectangular and easy for you or a parent volunteer to cut on a paper slicer. No need to cut around a cute turkey or round pumpkin shape, just rectangles with frames, math problems, and cute clip art, perfect for third graders!

Estimate Sums Center Game

This Estimate Sums Center Games Resource is Part of Bigger Bundles:

This 3rd Grade Go Math 1.3 Estimate Sums Center Games Resource has matching Estimate Sums Resources:

Estimate Sums Center Game
You will love how easy it is to prepare this Go Math 1.3 Estimate Sums Center Games for your class.

Estimate Sums Center Game

This Estimate Sums Center Games Resource Includes:

Page One - A cute, colorful cover page stating "Estimate Sums" that can be used for:

* A cover sheet for your file folder in your files.

* It can also be a math center folder cover for your students, by putting this math center in a folder with the folder cover, your students can take it back to their desk if your classroom space is limited.

* You can also use the cover page as a poster, placing it on the wall over your math center.

Page Two - Twelve center game cards with cute clip art and the math problems.

Page Three - Twelve center game cards with cute clip art and the answers.

Page Four - A Student Directions page, perfect to place in the center folder or staple up above the math center on the wall.

Page Five - A cute, clip art matching "Math Center" sign, place on the wall over your math center, and if you like, it can stay up all year!

Page Six - Teacher Directions.

Page Seven - This page is a Common Core poster for your math center, or a Classroom Focus Board with the main focus of the lesson, and it can also be printed off and 3-hole punched into your lesson plan notebook.

Page Eight - A cute, black and white outlined clip art cover page stating "Estimate Sums" that can be used for:

* A cover sheet for your file folder in your files.

* It can also be a math center folder cover for your students, by putting this math center in a folder with the folder cover, your students can take it back to their desk if your classroom space is limited.

* You can also use the cover page as a poster, placing it on the wall over your math center, again, print on colored paper to save colored ink, but really POP!

* You can use it as a center cover for a Make and Take Family Math Night.

Page Nine - Twelve black and white outlined clip art center game cards with the math problems. Your students can color and cut them out for a Make and Take Family Math Night.

Page Ten - Twelve black and white outlined clip art center game cards with the answers. Your students can color and cut them out for a Make and Take Family Math Night.

Page Eleven - A black and white outlined clip art Student Directions page, perfect to place in the center folder or staple up above the math center on the wall.

Page Twelve - A cute, black and white outlined clip art matching "Math Center" sign, place on the wall over your math center, and if you like, it can stay up all year! Your students can color this to take home during a Make and Take Family Math Night.

Page Thirteen - Teacher Directions with black and white outlined clip art.

Page Fourteen - This page is a Common Core poster with black and white outlined clip art, for your math center, or a Classroom Focus Board with the main focus of the lesson, and it can also be printed off and 3-hole punched into your lesson plan notebook.

Pages Fifteen to Twenty-Six → → → New Bonus - Twelve Page Letter From Me! This letter includes many ways to use Center Games, Task Cards, and Color By Numbers in your classroom!

Estimate Sums Center Game


There are many ways to use this Estimate Sums Resource, here are a few of my favorite ways:

  • Use one page as a game board, cut the other page. Place all those cards face down. Have the students turn over one card at a time, solve and place face up on the board. If they are incorrect, the card returns to the bottom of the pile. The winner is the student who places the final card. OR, for a "no winner" version, the goal is for the students to solve the cards independently, but to completely cover the board together. This version can ALSO be played two ways. One way is with the answer page as the game board, another way is with the math problem page as the game board instead.
  • You can also play this game with cutting all the cards and matching up the problems with the solutions.
  • For movement, place the problem cards around the room and the student(s) have to solve the math problem and leave the correct answer card at that location. Have a second student check the answers to extend the game.
  • Mix all the cards together, with two students, deal 5 cards to each student and then place the remaining cards face down. Use as a Go Fish card game!
  • Lay all the cards upside down on the floor and use as a Concentration (some call it Memory) Game!
Estimate Sums Center Game

This 3rd Grade Go Math 1.3 Estimate Sums Center Games Resource is also PERFECT for...

• Remediation and RTI groups

• Substitute teacher folders

• Scoot and Read the Room games

• Concentration

• Match Game

• Go Fish

• Assessments

• Fine motor skills work

• Indoor recess

• Morning work

• Emergency sub tubs

• Homework packets

• Math Night with Parents

• Math centers

• Early morning arrival students

• After school tutoring

• Before school tutoring

• And so much more!

Estimate Sums Center Game


This Estimate Sums Center Game is so easy to prep, it is perfect to give to a parent volunteer who is asking, "How can I help?" or your PTA / PTO volunteer room. It is also terrific for an Emergency Substitute Tub, Folder or Binder!

Fern Smith's Classroom Ideas Rounding to Estimate the Sum Center Games at TeacherspayTeachers, TpT.

Estimate Sums Center Game

To Recap This Estimate Sums Center Games Resource Includes:

  • 24 Estimate Sums center game cards in color
  • 24 Estimate Sums center game cards in black and white
  • 1 Estimate Sums center game folder cover / math center sign in color
  • 1 Estimate Sums center game folder cover / math center sign in black and white
  • 1 Estimate Sums student directions in color
  • 1 Estimate Sums student directions in black and white
  • 1 Estimate Sums teacher directions in color
  • 1 Estimate Sums teacher directions in black and white
  • 1 Estimate Sums math center sign in color
  • 1 Estimate Sums math center sign in black and white
  • 1 Estimate Sums Common Core Poster in color
  • 1 Estimate Sums Common Core Poster in black and white
  • Twelve Page Letter From Me! This letter includes many ways to use Center Games, Task Cards, and Color By Numbers in your classroom!

Common Core State Standards

CCSS.MATH.CONTENT.3.NBT.A.1

Use place value understanding to round whole numbers to the nearest 10 or 100.

CCSS.MATH.CONTENT.3.NBT.A.2

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.


Next Up... I also have a Color by Number for Estimate Sums!

Rounding to Estimate the Sum Color by Number

Finding class time during the day to allow students to work on their basic math skills can be challenging! But knowing those facts quickly will help your students master the harder math skills ahead of them! You will love the no prep, print and go ease of this 3rd Grade Go Math 1.3 Estimate Sums Color By Number Resource.

Rounding to Estimate the Sum Color by Number


It includes 5 student pages for introducing or reviewing How to Estimate Sums and 5 answer keys. Fluently add and subtract within 1,000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction is an essential skill to master in third grade. Students need to be able to understand how to use place value to round whole numbers to the nearest 10 or 100 as a stepping stone for many third grade math skills. With the 5 Estimate Sums Answer Keys also included, this helps you quickly and efficiently check your students work in a very short amount of time.

Rounding to Estimate the Sum Color by Number
** Additional Important Information **

I have no math problems on the cute little children's skin and hair, allowing your students to select any skin tone color and any hair color. The directions read, "You pick the color for any empty areas." This also allows for some creativity after their math is done by selecting additional colors of their choice for the borders and other blank remaining areas. This feature is a real hit with my teacher buyers!

Rounding to Estimate the Sum Color by Number

This Estimate Sums Color By Number Resource Includes:

Page One - A cover page stating "Using Rounding to Estimate the Sum" that can be used for a cover sheet for your file folder in your files. It can also be a folder cover for your students, give them a file folder with this cover and they can keep all the student sheets in the file folder to work on during math centers, morning work, or as a fast finisher activity. You can take a large piece of construction paper, 12 inches X 18 inches, fold it in half and use that as a "File Folder" to hold your students' work.

Page Two - This page is a Common Core poster for your math center, or classroom with the main focus of the lesson. It can also be used as a page in your students folder to explain the "Student Goal" ~ The "Why?" we are learning this skill.

A cute little boy is on the poster that they can color and it also has the Common Core definition.

Third Grade 3.NBT.A.1

Use place value understanding to round whole numbers to the nearest 10 or 100.


Page Three - A cute little boy reading and listening to his music on this solve and color page. Students solve the Estimate Sums - Round to the Nearest Ten Only problems on this page and then use the Color Code to color it in. A fun idea is to have the students do the math during morning work, and then they can use color pencils, markers, water color paint, etc. to color by code during math center time or seat work time.

Page Four - An adorable, funky apple is on this solve and color page. Students solve the Estimate Sums - Round to the Nearest Hundred Only problems on this page and then use the Color Code to color it in. A fun idea is list above on Page Three that will work for this page too.

Page Five - An adorable, funky cupcake is on this solve and color page. Students solve the Estimate Sums - Round to the Nearest Hundred Only problems on this page and then use the Color Code to color it in. A fun idea is list above on Page Three that will work for this page too.

Page Six - This page has 15 Estimate Sums - Round to the Nearest Ten Only math problems and it also includes a different small, cute little boy in the corner and a funky border for the students to color.

Page Seven - This page has 15 Estimate Sums - Round to the Nearest Hundred Only math problems and it also includes a different small, cute little boy in the corner and a funky border for the students to color.

Page Eight - A cover page stating "Using Rounding to Estimate the Sum Answer Keys" so you or a substitute teacher knows where the answer keys start. Leave it paper clipped to the answer keys you have selected for a substitute teacher sub tub so that your student papers can be graded while you are out sick!

Page Nine Answer Key for this page - Page Three - A cute little boy reading and listening to his music on this solve and color page. Students solve the Estimate Sums - Round to the Nearest Ten Only problems on this page and then use the Color Code to color it in. A fun idea is to have the students do the math during morning work, and then they can use color pencils, markers, water color paint, etc. to color by code during math center time or seat work time.

Page Ten Answer Key for this page - Page Four - An adorable, funky apple is on this solve and color page. Students solve the Estimate Sums - Round to the Nearest Hundred Only problems on this page and then use the Color Code to color it in. A fun idea is list above on Page Three that will work for this page too.

Page Eleven Answer Key for this page - Page Five - An adorable, funky cupcake is on this solve and color page. Students solve the Estimate Sums - Round to the Nearest Hundred Only problems on this page and then use the Color Code to color it in. A fun idea is list above on Page Three that will work for this page too.

Page Twelve Answer Key for this page - Page Six - This page has 15 Estimate Sums - Round to the Nearest Ten Only math problems and it also includes a different small, cute little boy in the corner and a funky border for the students to color.

Page Thirteen Answer Key for this page - Page Seven - This page has 15 Estimate Sums - Round to the Nearest Hundred Only math problems and it also includes a different small, cute little boy in the corner and a funky border for the students to color.


Page Fourteen - Weekly Lesson Plan Ideas and Suggestions

Pages Fifteen to Twenty-Six - >>> BONUS FILE - Twelve Page Letter From Me! This letter includes many ways to use Center Games, Task Cards, and Color By Number in your classroom!

Rounding to Estimate the Sum Color by Number


Lesson Plan Ideas

Monday - Use page 6, the 15 Estimate Sums - Round to the Nearest Ten Only math problems, as a pre-assessment. Plan your small groups for the week around the data from this and your other observations.

Tuesday - Use page 7, the 15 Estimate Sums - Round to the Nearest Hundred Only math problems as morning work. Depending on the level of your boys and girls, they can complete the page alone, in pairs, or in a group. You can have the answer key on the board so that they are copying the correct answers as a very basic, low math level activity. OR Once the boys and girls are done, you, or a student, can project the answer key, covering up the problems and call them out one at a time, while revealing the answer. During math rotations, use page 3, the cute little boy reading and listening to his music with the Estimate Sums - Round to the Nearest Ten Only problems during the student seat work time.

Wednesday - During math rotations, use page 4, the cute, adorable, funky apple with the Estimate Sums - Round to the Nearest Hundred Only problems during the student seat work time.

Thursday - During morning work, classwork, small group instruction, or seat work, have the students complete page 5, the adorable, funky cupcake page with the Estimate Sums - Round to the Nearest Hundred Only problems. You can have the students self-correct the page or peer sharing to review and come to a final answer together, all sorts of review possibilities.

Friday - Use page 7 again, the Estimate Sums - Round to the Nearest Hundred Only page as a final assessment.

Weekly Homework - You can use any and all of these pages as your weekly homework review, they are completely student self-directed so you will not have any problems or concerns with parents that are unable to help their children with this assignment. Win-Win for everyone!

Rounding to Estimate the Sum Color by Number

This Estimate Sums Color By Number Resource Is Perfect for...

  • Math Center Assignments
  • Fine Motor Skills Work
  • Small Math Group Lessons
  • Math Workstations
  • Morning Work Worksheet
  • Remediation and RTI Groups
  • Clip Board Work Time
  • Seat Work
  • Substitute Teacher Folders
  • Indoor Recess
  • Homework Packets
  • Morning Work Tubs
  • Independent Practice
  • Early Finishers
  • Emergency Sub Tubs
  • Morning Math Buckets
  • After School Tutoring
  • Early Morning Arrival Students
  • Early Morning Tutoring
  • Indoor Recess
  • And so much more!
Rounding to Estimate the Sum Color by Number


This Color By Number Estimate Sums has some matching resources:

This Color By Number Round to the Nearest Ten or Hundred Resource is also available in the following bundle:

*** Excellent for an assessment. ***

Common Core State Standards

CCSS.MATH.CONTENT.3.NBT.A.1

Use place value understanding to round whole numbers to the nearest 10 or 100.

CCSS.MATH.CONTENT.3.NBT.A.2

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

Fern Smith's Classroom Ideas Rounding to Estimate the Sum Color By Code Printables at TeacherspayTeachers, TpT.

To Recap --- This Estimate Sums Resource Includes:
FIVE Estimate Sums printables and
FIVE Estimate Sums answer keys.
TWO Estimate Sums Teacher Folder Covers
One Common Core Poster
TWELVE page letter with ideas, tips, and lesson plans for using Center Games, Task Cards, and Color By Number in your classroom!

Fern Smith's Classroom Ideas Rounding to Estimate the Sum Color By Code Printables at TeacherspayTeachers, TpT.

Next Up... I also have a Task Cards for Estimate Sums!
Estimate Sums Task Cards

You will love how easy it is to prepare these 3rd Grade Go Math 1.3 Estimate Sums Task Cards for your class. My students LOVED Task Cards and your students will too! You can dedicate one of your math centers, math workstations, as a task card center. By changing out the skill each week, your students already know the directions for using the task cards. 

Estimate Sums Task Cards

Your students will enjoy the freedom of task cards while learning and reviewing important skills at the same time! Students can answer these Estimate Sums Task Cards in your classroom math journals or on the included recording sheet. These 3rd Grade Go Math 1.3 Estimate Sums Task Cards are perfect for assessment grades for 3rd Grade Go Math Chapter 1!

Estimate Sums Task Cards

Once your students are use to the expectations of using task cards, your task card math center can run all year with different skills from a variety of over 700+ of my task cards! Click here to see all my task cards.

Estimate Sums Task Cards

When it comes to the ease of prepping these Estimate Sums Task Cards, all pieces are rectangular and easy for you or a parent volunteer to cut on a paper slicer. No need to cut around a cute turkey or round pumpkin task card, just rectangles with graphics that are adorable and eye catching to hold your students' interest!

Estimate Sums Task Cards

→ → → This 3rd Grade Go Math 1.3 Estimate Sums Task Card Include:

Page 1 - Teacher Folder - Cute, colorful cover for your personal teacher files. Attach to the front of a folder, keep all your pages inside the folder, place into your file cabinet, and you are all ready for next year with this easily identified Estimate Sums task cards folder cover.

Page 2 - Matching Printable Center Sign saying "Task Cards"

Pages 3 to 11 - 36 Estimate Sums Task Cards. The first two task cards on every page focuses only on estimating for ten and the last two task cards on every page focuses only on estimating for hundred. This way you can differentiate your class by giving a few cards to your lowest group, more cards to your average group, and all the cards to your highest group, but everyone will still get experience with rounding to nearest ten and rounding to the nearest hundred while estimating sums.

Page 12 - Recording Sheet.

Page 13 - Answer Key / Student Self-Checking Page

Page 14 - Teacher Folder In Grayscale - Cute, colorful cover for your personal teacher files. Attach to the front of a folder, keep all your pages inside the folder, place into your file cabinet, and you are all ready for next year with this easily identified Estimate Sums task cards folder cover.

Page 15 - Matching Printable Center Sign saying "Task Cards" in Grayscale, print on colored paper to save colored ink and to really make your sign POP!

Pages 16 to 24 - 36 Estimate Sums Task Cards in a black and white outlined style of clip art. The first two task cards on every page focuses only on estimating for ten and the last two task cards on every page focuses only on estimating for hundred. This way you can differentiate your class by giving a few cards to your lowest group, more cards to your average group, and all the cards to your highest group, but everyone will still get experience with rounding to nearest ten and rounding to the nearest hundred while estimating sums.

Pages 25 to 36 - >>> BONUS FILE - Twelve Page Letter From Me! This letter includes many ways to use Center Games, Task Cards, and Color By Number in your classroom!

Estimate Sums Task Cards
*** Excellent for an assessment. ***

These Estimate Sums Task Cards also include the answer key, which you can laminate and left at the center to allow it to be a student led, self-checking sheet. In small group lessons you can give each student three to four cards and they can help each other and review the Estimate Sums skill by checking the answers that their partner or neighbor answered, keeping everyone involved! Keep your students engaged, alert and on their toes with this one little, cute Estimate Sums Resource!

Estimate Sums Task Cards

This Estimate Sums Task Cards Resource has some matching resources:

This Estimate Sums Task Cards Resource is also available in the following bundles:

*** Excellent for a substitute teacher folder, or sub tub! ***

Common Core State Standards

  • CCSS.MATH.CONTENT.3.NBT.A.1

Use place value understanding to round whole numbers to the nearest 10 or 100.

  • CCSS.MATH.CONTENT.3.NBT.A.2

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

**** Enjoy this 3rd Grade Go Math 1.3 Estimate Sums Task Cards in your Math Center Today! ****

Estimate Sums Task Cards are Perfect for...

  • Remediation and RTI groups
  • Substitute teacher folders
  • Scoot Game! Keep them all up and moving!
  • Math Workstations
  • Indoor recess
  • Read the Room Game
  • Morning work
  • Emergency sub tubs
  • Morning Math buckets
  • Math centers
  • Early morning students
  • After school tutoring
  • Parent Math Nights
  • And so much more!

This Estimate Sums Task Cards Resources are so easy to prep, it is perfect to give to a parent volunteer who is asking, "How can I help?" or your PTA / PTO volunteer room. It is also terrific for an Emergency Substitute Tub, Folder or Binder!


Fern Smith's Classroom Ideas Rounding to Estimate the Sum Task Cards Printables at TeacherspayTeachers, TpT.

To Recap ~ This Estimate Sums Task Cards and Recording Sheet Resource Includes:
→ 36 Estimate Sums Task Cards in Color
→ 36 Matching Estimate Sums Task Cards in Black and White
→ 1 Recording Sheet
→ 1 Answer Key Sheet - Perfect for a Student Self-Checking Sheet
→ Task Card Folder Cover
→ Center Sign Stating "Task Cards" perfect for a student folder cover too!
→ → → New Bonus - Twelve Page Letter From Me! This letter includes many ways to use Center Games, Task Cards, and Color By Numbers in your classroom!

>>> Need something great for 3rd Grade Go Math 1.6 Break Apart Strategy for Place Value? Click here to see my Break Apart Strategy Task Cards. <<<


** BUNDLE AVAILABLE **
Estimate Sums BUNDLE
Estimate Sums BUNDLE


Rounding to Estimate the Sums Resources
Estimate Sums Center Game
Estimate Sums Task Cards

Estimate Sums Color By Number
Estimate Sums BUNDLE

BUNDLES for 3rd Grade!


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