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Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
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Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade
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What others say

"This helped me identify which place value students struggled rounding to. They had a ton of fun completing this! Each puzzle required thinking. Loved this resource!"
star
Cassie L.
"My students love these math mysteries and this is such a fun activity after we read The Wild Robot and a perfect rounding review! "
star
Laura P.

Description

Rounding to the nearest ten and hundred math activity - 3rd Grade Edition. This rounding math mystery will engage and motivate your students! Students will be practicing and reviewing rounding whole numbers to the nearest ten and hundred to solve the Case of the Robot Robbery. This is the 3rd Grade Edition packet (please note that the grades indicated are only guides. Check out the clue skills below to ensure suitability for your class and curriculum).

Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download.

Students must use their rounding skills to unlock clues. Then, use their powers of deduction to narrow down the list of robot suspects.

-------------------------------------------------------------------------------------------

Optional video hook included for introducing the case! (Check it out in the preview section)

BONUS: Ending video added to wrap up the case!

--------------------------------------------------------------------------------------------

Preparation

- No Prep required! Print the student pages, staple or place

them in a folder, and your students are set to go.

- Have the video hook ready for viewing at the start of the

lesson on an IWB, iPad, or computer monitor screen.

- Make copies of the Google Slides to assign digitally. Remember, students will need to be in 'edit' mode, not 'presentation' mode, to complete.

-----------------------------------------------------------------------------------------------

Math Skills Required to Unlock Clues

There are five clues to crack to solve the mystery:

  • Clue 1: Rounding to the nearest ten
  • Clue 2: Rounding to the nearest hundred
  • Clue 3: Rounding to the nearest ten and hundred
  • Clue 4: MORE Rounding (nearest ten and hundred only)
  • Clue 5: Rounding with larger numbers (nearest ten and hundred)

Students must use critical thinking skills to figure out what the clue is telling them to eliminate from the list of possibilities.

----------------------------------------------------------------------------------------------

Multiple Uses

- Suitable for independent, pairs, or group work.

- Use as part of your math centers, add to your sub tubs, make it part of your early finisher tasks, give for homework, or make it part of your classroom practice/review sessions.

I recommend pacing this activity by giving students one clue at a time. Once the whole class has completed a clue, then move on to the next clue either within the same lesson or the next math session. New math content presented? Make a lesson out of it by modeling the math before diving into the clue. I like to say, "we must learn something new before attempting the next clue."

-----------------------------------------------------------------------------------------------

How long will this activity take?

Time to complete will vary anywhere between 30mins - 2 hours or more! It mainly depends on how familiar your students are with the math mystery format and how difficult they find math skills covered in the particular mystery. Please check the math skills outlined in the clues above to help determine suitability for your class.

_________________________________________________________

You may also like:

Place Value Math Mystery: Case of The Puzzled Pirate

------------------------------------------------------------------------------------------------

This Math Mystery is available in the grade editions listed below:

Rounding Math Mystery: Case of the Robot Robbery (GRADE 3)

Rounding Math Mystery: Case of the Robot Robbery (GRADE 4)

Rounding Math Mystery: Case of the Robot Robbery (GRADE 5)

----------------------------------------------------------------------------------------------

Add extra motivation with this Detective Rank Chart Download the Mystery Record & Rank Chart FREEBIE HERE

----------------------------------------------------------------------------------------------

Bundle and Save!

COMPLETE Math Mystery Bundle for GRADE 3

HOLIDAY Math Mysteries Bundle Pack GRADE 3

SKILLS Math Mystery Bundle (3rd Grade)

SEASONS Math Mystery Bundle Pack (GRADE 3)

----------------------------------------------------------------------------------------------------------------

Not sure what a math mystery is? CLICK HERE to watch a video about Math Mysteries

TRY A FULL FREE MATH MYSTERY HERE (GRADES 1 - 6 DIFFERENTIATED BUNDLE)

Browse the 3rd Grade Range:

>>Download the FREE 3rd Grade Checklist here:<<

>> CLICK HERE to follow my store<<

-------------------------------------------------------------------------------------------------

For more ideas, activities, and resources, follow my store (by clicking the little green star) to stay updated on new releases. We can also stay connected via:

Blog

Pinterest

Facebook

___________________________________________________________________

Thank you!

Mrs. J.

© 2018

Report this resource to TPT
Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

Rounding to the Nearest Ten and Hundred: Math Mystery Game Activity 3rd Grade

Mrs J's Resource Creations
41.6k Followers
$4.95

Highlights

Digital downloads
Grades icon
Grades
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Standards
Pages
17
Answer Key
Included

What others say

"This helped me identify which place value students struggled rounding to. They had a ton of fun completing this! Each puzzle required thinking. Loved this resource!"
star
Cassie L.
"My students love these math mysteries and this is such a fun activity after we read The Wild Robot and a perfect rounding review! "
star
Laura P.

Save even more with bundles

Math Mysteries COMPLETE 3rd Grade Collection! This complete Math Mystery bundle contains all of my math mysteries for Grade 3 up to date! Make math fun and exciting with these engaging activities that will motivate even some of your most reluctant learners.Easy prep! Just Print &amp; Solve! Or go pa
Price $235.43Original Price $336.35Save $100.92
72
This SKILLS math mystery bundle contains all of my skill/concept focused math mysteries for Grade 3 up to date! Make math fun and exciting with these engaging activities that will motivate even some of your most reluctant learners.Easy prep! Just Print &amp; Solve! Or go paperless with the new Googl
Price $97.96Original Price $122.45Save $24.49
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Mrs. J's Math Mystery collection from 1st to 6th grade.Grab all of the math mysteries to engage and motivate your students and differentiate across grade levels! FAQ: Will I be adding more math mysteries to this bundle?A: Yes, I will add new 1st-6th Grade Math Mysteries to this bundle until it reach
Price $1049.45Original Price $1750.70Save $701.25
369

Description

Rounding to the nearest ten and hundred math activity - 3rd Grade Edition. This rounding math mystery will engage and motivate your students! Students will be practicing and reviewing rounding whole numbers to the nearest ten and hundred to solve the Case of the Robot Robbery. This is the 3rd Grade Edition packet (please note that the grades indicated are only guides. Check out the clue skills below to ensure suitability for your class and curriculum).

Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download.

Students must use their rounding skills to unlock clues. Then, use their powers of deduction to narrow down the list of robot suspects.

-------------------------------------------------------------------------------------------

Optional video hook included for introducing the case! (Check it out in the preview section)

BONUS: Ending video added to wrap up the case!

--------------------------------------------------------------------------------------------

Preparation

- No Prep required! Print the student pages, staple or place

them in a folder, and your students are set to go.

- Have the video hook ready for viewing at the start of the

lesson on an IWB, iPad, or computer monitor screen.

- Make copies of the Google Slides to assign digitally. Remember, students will need to be in 'edit' mode, not 'presentation' mode, to complete.

-----------------------------------------------------------------------------------------------

Math Skills Required to Unlock Clues

There are five clues to crack to solve the mystery:

  • Clue 1: Rounding to the nearest ten
  • Clue 2: Rounding to the nearest hundred
  • Clue 3: Rounding to the nearest ten and hundred
  • Clue 4: MORE Rounding (nearest ten and hundred only)
  • Clue 5: Rounding with larger numbers (nearest ten and hundred)

Students must use critical thinking skills to figure out what the clue is telling them to eliminate from the list of possibilities.

----------------------------------------------------------------------------------------------

Multiple Uses

- Suitable for independent, pairs, or group work.

- Use as part of your math centers, add to your sub tubs, make it part of your early finisher tasks, give for homework, or make it part of your classroom practice/review sessions.

I recommend pacing this activity by giving students one clue at a time. Once the whole class has completed a clue, then move on to the next clue either within the same lesson or the next math session. New math content presented? Make a lesson out of it by modeling the math before diving into the clue. I like to say, "we must learn something new before attempting the next clue."

-----------------------------------------------------------------------------------------------

How long will this activity take?

Time to complete will vary anywhere between 30mins - 2 hours or more! It mainly depends on how familiar your students are with the math mystery format and how difficult they find math skills covered in the particular mystery. Please check the math skills outlined in the clues above to help determine suitability for your class.

_________________________________________________________

You may also like:

Place Value Math Mystery: Case of The Puzzled Pirate

------------------------------------------------------------------------------------------------

This Math Mystery is available in the grade editions listed below:

Rounding Math Mystery: Case of the Robot Robbery (GRADE 3)

Rounding Math Mystery: Case of the Robot Robbery (GRADE 4)

Rounding Math Mystery: Case of the Robot Robbery (GRADE 5)

----------------------------------------------------------------------------------------------

Add extra motivation with this Detective Rank Chart Download the Mystery Record & Rank Chart FREEBIE HERE

----------------------------------------------------------------------------------------------

Bundle and Save!

COMPLETE Math Mystery Bundle for GRADE 3

HOLIDAY Math Mysteries Bundle Pack GRADE 3

SKILLS Math Mystery Bundle (3rd Grade)

SEASONS Math Mystery Bundle Pack (GRADE 3)

----------------------------------------------------------------------------------------------------------------

Not sure what a math mystery is? CLICK HERE to watch a video about Math Mysteries

TRY A FULL FREE MATH MYSTERY HERE (GRADES 1 - 6 DIFFERENTIATED BUNDLE)

Browse the 3rd Grade Range:

>>Download the FREE 3rd Grade Checklist here:<<

>> CLICK HERE to follow my store<<

-------------------------------------------------------------------------------------------------

For more ideas, activities, and resources, follow my store (by clicking the little green star) to stay updated on new releases. We can also stay connected via:

Blog

Pinterest

Facebook

___________________________________________________________________

Thank you!

Mrs. J.

© 2018

Report this resource to TPT
Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

Reviews

4.9
Rated 4.92 out of 5, based on 429 reviews
429
ratings
5
404
4
25
3
0
2
0
1
0
Mostly used with 3rd grade
Reviews
1
1
1
10
221
29
10
PreK
K
1st
2nd
3rd
4th
5th
What customers are saying
Met expectations
100%
Is a great value
93%
Is standards-aligned
100%
All verified TPT purchases
Kids Love Them
Rated 5 out of 5
May 23, 2026
Excellent resource. We're using these the last few weeks, after our provincial testing.
Traci T.
699 reviews • Outside the United States
Grades taught: 3rd
Student populations: Emerging bilinguals, Learning difficulties
We love math mysteries
Rated 5 out of 5
April 24, 2026
Met expectations
Great value
Standards-aligned
My students ask for math mysteries every chance they get and this one did not disappoint.
406 reviews • Indiana
Grades taught: 3rd
Fun practice with great variety!
Rated 5 out of 5
April 21, 2026
Met expectations
Great value
Standards-aligned
This helped me identify which place value students struggled rounding to. They had a ton of fun completing this! Each puzzle required thinking. Loved this resource!
Cassie L.
186 reviews • Texas
Grades taught: 3rd
Engaging Math!
Rated 5 out of 5
April 1, 2026
My students love these math mysteries and this is such a fun activity after we read The Wild Robot and a perfect rounding review!
Laura P.
315 reviews • California
Grades taught: 3rd
Amazing resource!
Rated 5 out of 5
March 15, 2026
Nothing seems to engage all the students quite like math mysteries!
Haley B.
383 reviews • Alabama
Grades taught: 2nd, 3rd
Great resource for elementary school kids. Thank you!!
Rated 5 out of 5
March 4, 2026
Great resource for elementary school kids. Thank you!!
Julia T.
232 reviews • Kentucky
Grades taught: 3rd, 4th, 5th
Well-Rounded!
Rated 5 out of 5
February 20, 2026
Met expectations
Great value
Standards-aligned
Loved this for my 4th graders! It was rigorous and gave them a great review.
277 reviews • Illinois
Grades taught: 3rd, 4th, 5th
Always Amazing
Rated 5 out of 5
February 9, 2026
Met expectations
Great value
Standards-aligned
My students love these activities. They are great for review, a sub, or just something fun to practice skills.
Miranda F.
109 reviews • Outside the United States
Grades taught: 3rd

Questions & Answers

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Standards

to see state-specific standards (only available in the US).
Use place value understanding to round whole numbers to the nearest 10 or 100.
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