A game for two players who take turns to select two numbers that add up to a prime number. 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Enter the names of the players.
Player 1:
Player 2:
StartEach adjacent pair of numbers on the line must add up to a prime number.
THE LINE


Transum.orgThis web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available. Please contact me if you have any suggestions or questions. 
More Activities: 

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician? Comment recorded on the 3 October 'Starter of the Day' page by Mrs Johnstone, 7Je: "I think this is a brilliant website as all the students enjoy doing the puzzles and it is a brilliant way to start a lesson." Comment recorded on the 28 May 'Starter of the Day' page by L Smith, Colwyn Bay: "An absolutely brilliant resource. Only recently been discovered but is used daily with all my classes. It is particularly useful when things can be saved for further use. Thank you!" 


Numeracy"Numeracy is a proficiency which is developed mainly in Mathematics but also in other subjects. It is more than an ability to do basic arithmetic. It involves developing confidence and competence with numbers and measures. It requires understanding of the number system, a repertoire of mathematical techniques, and an inclination and ability to solve quantitative or spatial problems in a range of contexts. Numeracy also demands understanding of the ways in which data are gathered by counting and measuring, and presented in graphs, diagrams, charts and tables." Secondary National Strategy, Mathematics at key stage 3 

Go MathsLearning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths main page links to more activities designed for students in upper Secondary/High school. TeachersIf you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows: 

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments. 
© Transum Mathematics :: This activity can be found online at:
www.transum.org/Maths/Game/Prime_Pairs/Default.asp?
There are 385072 ways of arranging the numbers 1  18 in a circle so that the sum of each pair of adjacent numbers is prime. Here is one of the possible ways
1,6,5,2,3,10,9,8,11,12,17,14,15,16,7,4,13,18.
See Math Forum for a discussion of PrimeSum Circles.
See Bernardo Recamán’s Primes in a Circle Puzzle.
See Scallywags and Scoundrels for a puzzle requiring the numbers 1  12 to be arranged in a PrimeSum Circle.
See Square Pairs Game for a similar game involving square numbers.
See Square Pairs for the related lesson Starter.
Close