Ratio Murder Mystery Activity | Grades 5–7 Math Ratios Worksheets, Word Problems & Answer Key
£2.00
Turn your next ratio lesson into a crime-solving investigation! Students become math detectives and work through a series of ratio challenges to uncover the killer, the weapon, the time and the location of the crime. 🕵️♀️🏠
A mysterious crime has taken place at Ratio Mansion and mathematician Dr. Rachel Numbers has been found dead in her study. The culprit has left behind mathematical clues – and only accurate ratio calculations will crack the case! 🔍🧮
🔪 CLUE 1 – IDENTIFY THE WEAPON
Students begin by simplifying ratios involving marbles, ingredients, fruit and books. Their answers reveal whether the mystery weapon was a knife, rope, pistol or poison. 🔢🔎
🕵️ CLUE 2 – FIND THE KILLER
Next, students solve equivalent ratios with missing values before combining their answers to identify the guilty suspect! 👀
Could it be:
🧔 Mr. Gray
👩 Miss Scarlet
🧑 Mr. Rusty
👩 Lady Amber?
⏰ CLUE 3 – DETERMINE THE TIME
Students tackle increasingly challenging ratio word problems, including:
🏫 Boys and girls in a school
🧁 Cakes and cookies
🎬 Movie theater seating
🍎 Apples and bananas
Correct calculations lead detectives to the time of the crime. ⏰🔍
🏠 CLUE 4 – FIND THE LOCATION
Was the crime committed in the:
🌳 Garden?
🍽️ Dining Room?
📚 Library?
🏠 Study?
Students decide whether pairs of ratios are equivalent, earn points for each answer and use their final score to uncover the location.
🎯 MATH SKILLS COVERED
➗ Simplifying ratios
🔢 Equivalent ratios
❓ Finding missing values
📝 Ratio word problems
⚖️ Comparing ratios
🧠 Multi-step problem solving
🔍 Mathematical reasoning
➕ Combining answers to solve clues
✅ ANSWER KEY INCLUDED
Teacher answer pages are included for all four mystery challenges, making the activity easy to check and perfect for independent or group work. 📚✔️
🌟 Perfect for:
🇺🇸 Grades 5–7 Math
➗ Ratios & proportional reasoning
🕵️ Math mystery activities
🎯 Math centers
👥 Partner or group work
🔄 Review & consolidation
🎉 End-of-unit activities
📋 Sub plans
🏠 Homeschool
⭐ Early finishers
🧠 Problem-solving lessons
📄 9 PAGES • PRINT & GO
🕵️ Engaging murder mystery scenario
🔢 Four different ratio challenges
🔪 Discover the weapon
👤 Identify the killer
⏰ Determine the time
🏠 Find the location
🧮 Varied ratio skills
✅ Full answer key included
🕵️♀️🔢 SOLVE • CALCULATE • INVESTIGATE • CRACK THE CASE! 🔎🎯
Make ratio practice feel like a game with a mystery activity that keeps students solving right to the final clue! 🕵️♂️➗✨