1st grade Easter Math Mystery Activity: Place Value, Numbers, Addition, Time

Grade Levels
1st - 2nd
Resource Type
Formats Included
  • Zip
  • Google Apps™
16 pages
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Includes Google Apps™
The Teacher-Author indicated this resource includes assets from Google Workspace (e.g. docs, slides, etc.).
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  1. Math Mysteries for the HOLIDAYS collection. 1st Grade Edition. These fun math mystery activities will get your students excited about doing math! Save with this Math Mystery holiday bundle for 1st Grade! Engage and motivate your students to review a variety of math skills with this collection of fun
    Save $17.50
  2. Math Mysteries the COMPLETE collection for 1st Grade. This complete math mystery bundle contains all of my math mysteries for Grade 1 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 & Solve!
    Save $43.65
  3. The whole Mrs. J's Math Mystery collection from 1st grade to 6th grade.Grab all of the math mysteries to engage and motivate your students, and differentiate across grade levels! Some titles are the same across grades, great for differentiation.Some titles are available for some grades and not other
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  4. This Complete Math Mystery Tri-Grade Bundle contains all of my math mysteries currently in the range available for Grades 1, 2, and 3! Make math fun and exciting by adding a mystery twist to your worksheets. Your students will gain lots of math practice, while also developing their critical thinkin
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Easter Math Mystery "Case of The Egg Thief." GRADE 1. NO PREP, just print and go! Or now available with Google Docs for a paper free option.

Students will need to answer a variety of math problems that will help them solve who the Egg Thief is! Engage and motivate your students with this unique and fun way to review their math skills.


A bonus ENDING VIDEO clip is included to celebrate finishing the mystery.

Distance Learning Update: I've added a Word Document within the folder that contains a Google Doc link to share this resource with your students via Google Classroom or Drive. Parts of the pages are editable so that your students can complete without having to print the pages. Please note, you will need to make a copy of the Google Slides to your drive before you can edit.

--> I've also added a PowerPoint that contains the Worksheets as images with editable textboxes for those who use Microsoft.

Math Skills included in this Math Mystery

  • Clue 1: Place Value Models (up to 20)
  • Clue 2: Reading Numbers Written in Words (up to 20)
  • Clue 3: Adding Numbers (up to 20)
  • Clue 4: Time (O'Clock only)
  • Clue 5: Adding Ten

How long will this activity take?

The 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, as well as 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. I highly 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." There are lots of ways to implement this activity in your classroom, learn more in the blog post link below:

Read Blog Post: Five Easy Ways to use Math Mysteries in your Classroom.

Great for spiral review during Easter time!

This Easter Math Mystery activity is also available for GRADES K-3!

Easter Math Mystery: Case of the Egg Thief (GRADE K)

Easter Math Mystery: Case of the Egg Thief (GRADE 2)

Easter Math Mystery: Case of the Egg Thief (GRADE 3)

Easter Math Mystery: Case of the Egg Thief (GRADE 4)

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

Bundle and Save!

COMPLETE Math Mystery Bundle - 1st Grade

Holiday Math Mystery Bundle {GRADE 1}

SEASONS Math Mystery Bundle Pack (GRADE 1)


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


Browse the 1st Grade Range:

>>Download the FREE 1st Grade Math Mystery Checklist here<<

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Thank you!

Mrs. J.

© 2016

Please note that the Grade 1 Math Mysteries cannot be 'clue swapped' with other Grade Math Mystery versions for customization/differentiation as you usually can with Grades 2-6.

Total Pages
16 pages
Answer Key
Teaching Duration
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to see state-specific standards (only available in the US).
Tell and write time in hours and half-hours using analog and digital clocks.
Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.
The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, 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 and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).


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