Number Theory Quizzes, Questions & Answers

Dive into the fascinating world of number theory with our engaging number theory quizzes. Read more

Prime Numbers Quizzes

Prime Basics (5) Prime Factorization (8) Sieve Of Eratosthenes (3) Twin Primes (3) Primality Tests (4)

Math Quiz: Take A Short Test On Prime Numbers

Welcome to our Prime Numbers Math Quiz! Are you ready to put your mathematical prowess to the test? Dive into the world of prime numbers and challenge yourself with a variety of qu...

Questions: 10 | Attempts: 4371 | Last updated: Apr 15, 2025

Sample Question
Is 35 a prime number?

Yes

No

Magic Numbers: Factors, Primes and Composites Quiz

Set out on a mathematical adventure with the "Magic Numbers: Factors, Primes, and Composites Quiz." This engaging quiz is designed to unravel the mysteries behind numbers...

Questions: 21 | Attempts: 1133 | Last updated: Apr 15, 2025

Sample Question
What is a factor?

A number that is always a prime number.

Two numbers that add to give you a sum.

One or two whole numbers that multiply to give you a product.

Two numbers that subtract to give you a difference.

Take The Prime Factorization Math Test!

Take the prime factorization math test! In the study of mathematics, the prime factorization of a number is achieved when we figure out what prime numbers multiply for us to find i...

Questions: 10 | Attempts: 16529 | Last updated: Apr 15, 2025

Sample Question
Is 16 prime number or composite number?

Composite

Understanding the Sieve Method

Can you outsmart the sieve and find the hidden primes before it does? In this quiz, you’ll explore the Sieve of Eratosthenes, a clever method that crosses out multiples to re...

Questions: 20 | Attempts: 10 | Last updated: Oct 12, 2025

Sample Question
The Sieve of Eratosthenes is used to:

Add numbers

Multiply numbers

Find prime numbers

Find square roots

Applying the Sieve to Numbers

Ready to put the sieve to the test? In this quiz, you’ll practice crossing out multiples, spotting which numbers remain prime, and noticing patterns as the list gets smaller....

Questions: 20 | Attempts: 10 | Last updated: Oct 12, 2025

Sample Question
When crossing out multiples of 2, which number disappears first?

1

2

4

5

Patterns with the Sieve

Think you can predict which numbers will survive the sieve? In this quiz, you’ll uncover patterns in prime numbers—seeing which ones stay, which ones vanish, and ...

Questions: 20 | Attempts: 10 | Last updated: Oct 12, 2025

Sample Question
What pattern do prime numbers follow in the sieve?

Even numbers

Multiples of 5

Numbers not crossed out

Perfect squares

Applying Twin Primes in Problems

Ready to put your twin prime knowledge to work? In this quiz, you’ll solve problems using twin prime pairs, find missing partners, and even add or compare them to uncover nea...

Questions: 20 | Attempts: 10 | Last updated: Oct 12, 2025

Sample Question
Which of these numbers is part of a twin prime pair?

15

19

21

25

Identifying Twin Primes

Can you spot the prime pairs that stick together like twins? In this quiz, you’ll learn how to recognize twin primes—pairs of prime numbers that are always two apart. Y...

Questions: 20 | Attempts: 10 | Last updated: Oct 12, 2025

Sample Question
Which of the following is a pair of twin primes?

9 and 11

11 and 13

17 and 19

21 and 23

Patterns with Twin Primes

Twin primes aren’t just random—they follow patterns worth exploring! In this quiz, you’ll analyze how twin primes appear on the number line, discover which ranges...

Questions: 20 | Attempts: 10 | Last updated: Oct 12, 2025

Sample Question
What pattern do twin primes always share?

One is even, one is odd

Both are odd

Both are even

Both are multiples of 5

Divisibility Rules Quizzes

Divisibility By 2 (8) Rules Application (5) Remainder Concepts (5) Number Puzzles (24) Divisibility Proofs (4)

Multiply by factors of 10

When it comes to multiplication, the easiest is when you are required to multiply by 10 or multiples of 10. Multiply by factors of 10 quizzes below will give you good training to b...

Questions: 10 | Attempts: 620 | Last updated: Feb 05, 2025

Sample Question
12.3 * 10

123

Math Exam - 1 (Number Theory)

This Math Exam - 1 focuses on Number Theory, including problems on divisibility, consecutive integers, and properties of prime numbers.

Questions: 10 | Attempts: 344 | Last updated: May 22, 2025

Sample Question
A certain integer when divided by 5 yields a remainder of 4. Which of these can not be an integer?

N/9

N/10

N/14

N/19

Test Your Math Trivia Skills

The "Quiz: Test Your Math Trivia Skills" is an exciting journey into the world of mathematics where you can challenge your knowledge and problem-solving abilities. Mathem...

Questions: 10 | Attempts: 93373 | Last updated: Jan 06, 2025

Sample Question
What is 83 x 0?

830

71

371

Online Mock Test 1: Number system

Online Mock Test 1: Number system explores various arithmetic concepts such as divisibility, GCD, and remainders. It tests understanding through problems involving factors, greates...

Questions: 10 | Attempts: 7028 | Last updated: Oct 11, 2025

Sample Question
If both 112 and 33 are factors of the number a * 43 * 62 * 1311, then what is the smallest possible value of 'a'?

121

363

3267

33

Divisibility Rules Practice Quiz

You must have read about the divisibility rules in your maths textbooks. Do you still remember those rules? If yes, play it out this practice quiz and test your knowledge for the s...

Questions: 10 | Attempts: 13861 | Last updated: Apr 03, 2025

Sample Question
What numbers are divisible by 2, 3, and 10 at the same time?

12

30

80

120

GCD And LCM Quizzes

GCD Basics (3) LCM Basics (5) Euclidean Algorithm (5) GCD LCM Practice (4) Coprime Numbers (5)

HCF And LCM Quiz Questions For Class 5

Try out these HCF and LCM quiz questions created for class 5th students. When it comes to finding the least common multiple, there are some rules that you are expected to follow to...

Questions: 10 | Attempts: 12569 | Last updated: Oct 22, 2025

Sample Question
The common factor between the numerator and denominator of 6/15 is ______

3

2

5

4

MATHEMATICS JSS 1 LAGOS STATE MINISTRY OF EDUCATION (EDVI)

This Mathematics quiz is designed for JSS 1 students under the Lagos State Ministry of Education curriculum. It assesses skills in finding HCF, LCM, performing arithmetic operation...

Questions: 41 | Attempts: 3980 | Last updated: Aug 07, 2025

Sample Question
Find the HCF of 9, 15, and 24.

(A) 2

(B) 6

(C) 3

(D) 7

Finding the GCD of Small Numbers

Ready to dive into the world of common factors? In this quiz, you’ll practice finding the greatest common divisor (GCD) of pairs of numbers. From simple fact checks to quick ...

Questions: 10 | Attempts: 10 | Last updated: Nov 07, 2025

Sample Question
What is the GCD of 12 and 18?

2

3

6

12

Applying GCD in Real-World Contexts

Numbers aren’t just for the classroom—they solve real problems too! In this quiz, you’ll use GCD to split groups evenly, arrange objects without leftovers, and de...

Questions: 10 | Attempts: 10 | Last updated: Nov 07, 2025

Sample Question
Two marching bands have 48 and 60 students. They want to line up in rows with the same number of students in each row and no one left out. What is the greatest number of students per row?

6

8

12

15

Prime Factorization and GCD

Want to see how prime numbers connect to the GCD? In this quiz, you’ll break numbers into prime factors and use those building blocks to find the greatest common divisor. You...

Questions: 10 | Attempts: 10 | Last updated: Nov 07, 2025

Sample Question
Find the GCD of 18 and 24 using prime factorization.

2

3

6

12

HCF and LCM Quiz

Hey, are you a math geek? If yes, then let's test your knowledge with these simple HCF and LCM quiz questions. Choose the correct answer and see how well you score. Do not forg...

Questions: 10 | Attempts: 28713 | Last updated: Oct 15, 2025

Sample Question
What does HCF stand for?

Heaviest Common Factor

Highest Common Factor

Heaviest and Craziest Factor

Hopelessly Crazed Friend

GK Test For Math

How much do you really know about general knowledge math?

Questions: 15 | Attempts: 210 | Last updated: Mar 21, 2025

Sample Question
When a group is said to be "abelian", what does this mean?

It Is Infinite

It Has A Homomorphic Image

It Is Finite

Its Operation Is Commutative

Modular Arithmetic Quizzes

Congruence (9) Modulo Basics (3) Congruence Relations (3) Modular Addition (3) Modular Multiplication (5) Modular Inverses (5)

Congruent Shapes and Lines of Symmetry

Explore congruence and symmetry in this interactive quiz. Engage with questions on congruent figures, their properties, and lines of symmetry. Ideal for learners seeking to underst...

Questions: 10 | Attempts: 1691 | Last updated: Jun 22, 2025

Sample Question
What two words complete the definition?Congruent figures are the same ___________ and ______________.

Size and color

Shape and color

Size and shape

Basics of Congruence

What does it mean when two numbers are “congruent” to each other? In this quiz, you’ll explore the idea of congruence, practice writing and checking statements li...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
Which statement is true?

17 ≡ 1 (mod 7)

17 ≡ 3 (mod 7)

17 ≡ 2 (mod 7)

17 ≡ 4 (mod 7)

Properties of Congruence

Congruence isn’t just a new way of writing remainders—it comes with powerful properties! In this quiz, you’ll test how congruence works with addition, multiplicat...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
If a ≡ b (mod n), then which is always true?

A - b is divisible by a:

A + b is divisible by n:

A × b is divisible by n:

A - b is divisible by n:

Applications of Congruence

From clocks and calendars to races and repeating schedules, congruence shows up everywhere. In this quiz, you’ll solve real-world problems that use congruence to model cycles...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
A digital clock shows 11:00. What time is it 27 hours later?

1:00

4:00

2:00

3:00

Basics of Modular Addition

What happens when you keep adding numbers but only care about the remainder? That’s modular addition! In this quiz, you’ll practice adding numbers under a modulus, lear...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
Compute: (7 + 5) mod 6

3

1

2

Properties of Modular Addition

Modular addition follows some neat rules—just like regular arithmetic, it’s commutative and associative, but with remainders built in. In this quiz, you’ll explor...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
Which property is true for modular addition?

Associative

Commutative

Both associative & commutative

Neither

Applications of Modular Addition

From clocks to calendars to repeating schedules, modular addition helps keep track of cycles in everyday life. In this quiz, you’ll apply modular addition to real-world probl...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
A clock shows 8:00. What time will it be in 11 hours?

6:00

7:00

8:00

9:00

Using Multiplicative Inverse To Solve Equations

When we talk about multiplicative inverse in mathematics, we are in other words talking about using a reciprocal for a number x which results in 1 when multiplied by the number x. ...

Questions: 5 | Attempts: 211 | Last updated: Mar 20, 2025

Sample Question
Solve the following:6/15 x = 60

X = 5400

X = 24

X = 2/3

X = 150

Modular Arithmetic Quiz

This Modular Arithmetic Quiz assesses understanding of calculations within a modular system, focusing on addition, subtraction, and multiplication modulo a number. It enhances prob...

Questions: 5 | Attempts: 2268 | Last updated: Mar 01, 2025

Sample Question
What's 4 + 5 (mod 7)?

2

Intro to Modulo

What happens when numbers don’t divide evenly? That’s where modulo comes in! In this quiz, you’ll explore what “mod” really means, practice finding re...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
What is 17 mod 5?

1

2

3

4

Real-World Applications of Modulo

Modulo is everywhere once you know where to look—clocks, calendars, playlists, and even games. In this quiz, you’ll put your skills into action to solve everyday proble...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
A clock shows 9:00. What time will it show after 19 hours?

4:00

2:00

5:00

7:00

Properties of Modulo

Modular arithmetic isn’t just about finding leftovers — it follows clever rules that make problem solving easier. In this quiz, you’ll learn how addition, multipl...

Questions: 10 | Attempts: 10 | Last updated: Oct 13, 2025

Sample Question
Which of the following is true?

17 ≡ 2 (mod 5)

22 ≡ 1 (mod 7)

Both A and B

Neither

Diophantine Equations Quizzes

Integer Solutions (18) Pythagorean Triples (5)

Comparing and Ordering Integers Quiz: Test!

This Comparing and Ordering Integers Quiz assesses understanding of integer concepts, including absolute values, representation of real-world scenarios with integers, and temperatu...

Questions: 9 | Attempts: 2562 | Last updated: Apr 15, 2025

Sample Question
Integers are whole numbers that describe opposite ideas in mathematics.

True

False

What do you know about Maris–McGwire–Sosa pair?

Famously inspired by baseball players Roger Maris, Mark McGwire, and Sammy Sosa, Maris–McGwire–Sosa pairs (or MMG pairs/numbers) are used in recreational mathematics to...

Questions: 10 | Attempts: 116 | Last updated: Mar 19, 2025

Sample Question
Which pairs are very similar to Maris–McGwire–Sosa pairs?

Ruth–Aaron pairs

Bulgarian numbers

Monastery-church pairs

Factor pairs

Number Theory Quizzes, Questions & Answers

Popular Number Theory Topics

Prime Numbers Quizzes

Divisibility Rules Quizzes

GCD And LCM Quizzes

Modular Arithmetic Quizzes

Diophantine Equations Quizzes

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