Description

Find the pot of gold with this St Patrick’s Day Math Mystery 4th Grade activity! ‘The Case of the Lost Leprechaun’ is a high-engagement math review that helps students master the toughest 4th-grade skills—long division and double-digit multiplication—while searching for the missing leprechaun, Sleepy O’Weepy.

It’s the perfect no-prep math activity! This resource is loaded with options, including an optional video hook and a NEW ending video (with voiceovers!) to wrap up the case!

Easy Prep for Print or Digital

This resource is designed to be low-prep for you and high-engagement for your students.

• Printable PDF Version: Just print the worksheets, staple, and go.
• Google Slides Digital Version: 100% paperless! Simply assign in Google Classroom. (Students must be in ‘edit mode’ to type).
• Metric & Customary Included: You get file options for both measurement systems!

St Patrick’s Day Math Mystery 4th Grade Activity

To find Sleepy O’Weepy, students must unlock five clues by correctly solving a complete Operations & Measurement review:

• Clue 1: Measurement Conversions (Converting units within Metric or US Customary systems)
• Clue 2: Adding Fractions (With Like Denominators)
• Clue 3: Subtracting Fractions (With Like Denominators)
• Clue 4: Long Division (Dividing 4-digit numbers by 1-digit numbers, No Remainders)
• Clue 5: Long Multiplication (Double-Digit by Double-Digit numbers)

Flexible for Any 4th Grade Classroom

Use this versatile March math worksheets alternative for:

• A fun St. Patrick’s Day celebration
• Math centers or stations
• Homework or enrichment
• Your “early finisher” tub
• A lifesaver for your sub-tub!

Pacing & Timing

This is a comprehensive review that can take anywhere from 30 minutes to 2+ hours, depending on your students’ skill level. We recommend pacing it by one clue at a time.

Common Questions for this 4th Grade Math Review

Q: Is the Long Division difficult?
A: We designed Clue 4 to build confidence. It involves dividing **4-digit numbers by 1-digit numbers**, but there are **No Remainders** to worry about. It’s the perfect way to practice the algorithm steps (Divide, Multiply, Subtract, Bring Down) without getting stuck.

Q: What Measurement units are used?
A: Clue 1 comes with two options: a **US Customary** version (inches, feet, yards) and a **Metric** version (mm, cm, m). You can choose the one that fits your curriculum.

Q: How does differentiation work with these?
A: That’s our secret weapon! Many of our stories are available for other grades, so you can “clue swap” with the 2-6 grade packs. We even have a blog post explaining how: learn how to differentiate here.

Other Grade Editions Available!

Love this ‘Lost Leprechaun’ theme? This mystery is also available for other grade levels (great for differentiation)!

• 1st Grade Edition 
• 2nd Grade Edition
• 3rd Grade Edition
• 5th Grade Edition

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A complete answer key and printable awards are included!

 

❤️Check out some other fun 4th Grade Math Mystery Resources.