Drill Bit Fractions

2025-08-19 13:18:22

Drill Bit Fractions

 

In this updated activity, students explore how drill bits are measured using fractions of an inch. They will use equivalent fractions to compare drill bit sizes, fill in missing numerators, and think about why fractions are used instead of decimals by converting fractions to decimals. Students will also consider why standard drill bit sizes exist. 

For younger grades, it's very important to kick off with the starter slides to guide them before the main activity. Don't forget the teaching notes & prompts in the speaker's notes. 

Extension: Students who need a greater challenge can be given the extension task right away instead of completing the main activity. See solutions & supporting materials. 

📝 For Grades 4–6
⏰ min 45 minutes

 

 

Activity Solutions & Supporting Materials
Share this:
Comments (2)
Malek Za - 2025-10-05 07:14:55
Vanessa Hays - 2025-09-04 05:42:04
    Display 1 - 2 Of total 2
    Giant Pumpkins (2025)
    🎃October is the time of year when giant pumpkin co...
    The drag in swimming - More Olympics activities
     To win in Olympic swimming, cont...
    Triple Crown hopefuls at the Preakness
     Credit: AP Photo/Garry Jones Saturday, ...
    New Horizons spacecraft just flew by a really distant asteroid
    Brian May, the lead guitarist of the rock band, ...
    The Euro and the international debt crisis
    Lately the news is filled with talk of the Euro,...
    How much do the movie tickets cost?
    Ooops! I was supposed to buy 4 adult and 2 ch...
    How many hot chocolate scoops do I need?
    Even though it is now Spring, here in New Englan...
    What are the odds that Justify can win the Triple Crown?
    Justify has won the Triple Crown.  He's...
    Operation Gratitude – Halloween candy buy back
        This is a great idea! Moti...
    Want to earn $150,000? - Mersenne prime search
    What's a Mersenne prime?  How hard coul...