Podcast
Questions and Answers
Which number between 1 and 20 is both a perfect square and a power of 2?
Which number between 1 and 20 is both a perfect square and a power of 2?
16
Identify the smallest composite number between 1 and 10.
Identify the smallest composite number between 1 and 10.
6
What is the sum of the first three prime numbers?
What is the sum of the first three prime numbers?
10
Name a composite number between 11 and 20 that is divisible by both 2 and 3.
Name a composite number between 11 and 20 that is divisible by both 2 and 3.
Signup and view all the answers
What is the largest prime number below 20?
What is the largest prime number below 20?
Signup and view all the answers
Flashcards
1
1
The smallest positive whole number is 1.
2
2
The first prime number is 2; it has only two divisors: 1 and itself.
4
4
Four can be represented as 2 x 2, showing it's a composite number.
9
9
Signup and view all the flashcards
12
12
Signup and view all the flashcards
Study Notes
Numbers 1-20
- 1 is the smallest positive whole number.
- 2 is the first prime number.
- 3 is the third natural number.
- 4 can be represented as 2 x 2.
- 5 is a prime number.
- 6 is a composite number (divisible by 2 and 3).
- 7 is the fifth prime number.
- 8 is a power of 2 (2 x 2 x 2).
- 9 is a perfect square (3 x 3).
- 10 can be represented as 2 x 5.
- 11 is the seventh prime number.
- 12 is a composite number (divisible by 2, 3, 4, and 6).
- 13 is a prime number.
- 14 is an even number, divisible by 2 and 7.
- 15 is a composite number (divisible by 3 and 5).
- 16 is a perfect square (4 x 4) and a power of 2.
- 17 is a prime number.
- 18 is a composite number (divisible by 2, 3, 6, 9).
- 19 is a prime number.
- 20 is a composite number (divisible by 2, 4, 5, and 10).
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge about the numbers from 1 to 20. This quiz covers properties such as prime numbers, composite numbers, perfect squares, and other interesting facts. It's perfect for anyone looking to reinforce their understanding of basic mathematics.
