6
Lesson 6 of 500 · Extra Passages
⭐ 30 XPGreatest Common Factor Part 2
📖Story Brief #6
The Greatest Common Factor, or GCF, is the largest number that can divide two or more numbers without leaving a remainder.
🎯 Your mission
Find what matters in the words.
⚡ The twist
Slow down. The first answer that pops up isn't always the right one.
Read this passage
Highlight speedNormal
The Greatest Common Factor, or GCF, is the largest number that can divide two or more numbers without leaving a remainder. To find the GCF, list the factors of each number and see which is the biggest one they share. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12, while the factors of 8 are 1, 2, 4, and 8. The biggest factor they both share is 4, so the GCF of 12 and 8 is 4.
Check Your Understanding
Question 1
1 of 2What is the GCF of 12 and 8?
🏆
Stretch Challenge
Try this in real life this week.
Read for 10 minutes today — anything you want.
👨👩👧
For the dinner table
“What's one thing you read today that surprised you?”
🎯
Next Smart Lesson
We'll pick a lesson that matches exactly how well you're reading right now.
📄Share card
Share this lesson
Send it to a parent or fellow reader. 5 minutes is all it takes.
🖨️View in Shop
Checkout complete lesson on Extra Passages for 3rd Grade
Get the full Extra Passages track as a printable PDF — all lessons, worksheets, and answer keys.