GCF and LCM worksheets for 5th grade, 6th grade and 7th grade make up this self-checking Mini Mystery Detective pack, with greatest common factor and least common multiple practice in ten printable math activities. The factors and multiples cases have a market day theme. Use them for math centers, small groups, homework or test prep. They're no prep, and answer keys are included.
Students find the greatest common factor of numbers to 100 and the least common multiple of numbers to 30, then work mixed pages and finish with three numbers. When an answer isn't on the suspect list, students know to look at that problem again.
What's Inside
- Finding the greatest common factor of two numbers to 100: GCF(54, 90), GCF(48, 84)
- Finding the least common multiple of two numbers, first within the times tables and then to 30: LCM(7, 10), LCM(15, 18), LCM(26, 30)
- Mixed GCF and LCM pages, where students read which one the question asks for
- The greatest common factor and least common multiple of three numbers: GCF(36, 54, 81), LCM(6, 8, 10)
- A reference page on factors and multiples, the listing method for each, and what happens when one number divides the other
Ten leveled cases run through the Saturday market: The Vanished Open Sign, The Cracked Egg Crates, The Switched Price Tags, The Spilled Milk Can, The Broken Bread Scales, The Empty Market Basket, The Cold Bakery Oven, The Runaway Delivery Cart, The Ruined Wedding Cake and The Bolted Bakery Door.
Answer keys, a detective's case log and a certificate of achievement are included.
What is a Mini Mystery Detective?
A no-prep detective activity where students solve math problems to cross off suspects and unmask the culprit.
When to Use This Resource
- Guided math
- Warm ups, bell ringers and morning work
- Independent practice
- Spiral review before fractions, since common denominators need the LCM
- End-of-unit review
- Intervention, tutoring and enrichment
- Early finishers and indoor recess
- Substitute plans
Grade Levels
Designed for 5th grade and 6th grade, where greatest common factor and least common multiple are taught. 7th graders who need a refresher before fractions with unlike denominators can use it too, and so can advanced 4th graders.
Why Teachers Love Mystery Detectives
- No prep
- Self-checking
- Leveled cases you can hand out by student
- Mixed GCF and LCM pages to practice reading the question
- Black and white, easy to print
- A market day mystery in every case
Want more cases like these?
Follow Kiwiland Education to discover more Mystery Detectives, factors and multiples activities, and detective-themed math for upper elementary and middle school classrooms.
https://www.teacherspayteachers.com/Sellers-Im-Following/Add/Kiwiland
