Why Seven Is Prime: Key Details

Read about prime and composite numbers, then answer questions about the key details.

Story Brief #9

Numbers can be categorized as prime or composite.

🎯 Your mission

Read carefully. Then prove you understood.

⚡ The twist

Slow down. The first answer that pops up isn't always the right one.

📖 1 of 2

Numbers can be categorized as prime or composite. A prime number is a number greater than 1 that has exactly two factors: 1 and itself. For example, 7 is a prime number because it can only be divided evenly by 1 and 7. In contrast, a composite number is a number that has more than two factors. For instance, 12 is composite because it can be divided evenly by 1, 2, 3, 4, 6, and 12.

📖 2 of 2

Understanding the difference helps us recognize patterns in numbers and is useful in many areas of math.

Question 1

1 of 2

What is a prime number?

How sure are you going to be?😐 maybe

Question 2

2 of 2

Which of the following is a composite number?

How sure are you going to be?😐 maybe

Nice work!

You got 0 of 2 right.

Next: Fifty Dollars, Thirty Spent: Key Details All lessons

🎯

Next Smart Lesson

We'll pick a lesson that matches exactly how well you're reading right now.

✨ More to explore

🏆 Try this week: Read for 10 minutes today — anything you want.

👨‍👩‍👧 At dinner: “What's one thing you read today that surprised you?”

📄Share card

Share this lesson

Send it to a parent or fellow reader. 5 minutes is all it takes.

Why Seven Is Prime: Key Details

Question 1

Question 2

Next Smart Lesson

Share this lesson

Why Seven Is Prime: Key Details

Done with reading? Try something else

Your Cart (0)