Mrs J's Math Mysteries
Mrs J's Math Mysteries
4.27692307692307730 reviews

Find fun and engaging math mysteries and projects to get your students motivated during math time. Great for practice and review, my math mysteries come in different grade levels that can be used to customize for differentiation. The grade levels are US Common Core aligned, check out the description which outlines skills and levels involved within that math mystery version to determine whether it suits your class level and/or curriculum. Enjoy! :)

jpg, 125.22 KB
jpg, 125.22 KB
pdf, 3.05 MB
pdf, 3.05 MB
Addition Math Mystery Activity - "Case of The Angry Adder!" Students must use their addition math skills to solve the case of the Angry Adder!

There are 5 clues to crack to solve the mystery:

Clue 1: Horizontal Addition (Within 20)
Clue 2: Adding Doubles (Few challenger questions at the end)
Clue 3: Addition Input/Output Tables (apply the rule given)
Clue 4: Addition Algorithms (Within 100 - No Regrouping)
Clue 5: Addition Algorithms (Within 100 - With Regrouping)

Pack also includes a mystery declaration sheet, answer sheets, elimination guide and awards.

Available for other grades with different skills/levels of difficulty. Please email me on for assistance.

*US spelling used. Please email me on if you would like adjusted to suit UK/AUS spelling.

Mrs J.

© 2016

2.OA.B.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
2.NBT.B.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.


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