It may be obvious to you that the sum of two even numbers is always even, for example $2+6=8$, $16+264=280$, and so on. But can you prove it?
In the display below you have to create the proof that the sum of two even numbers is even.
Use your mouse (or finger for touch devices) to drag statements into the correct order. The gauge shows if you are moving in the right direction.
Once you have understand the symbols, notation and language of mathematics, then you have to put it all together in a logical form. The concept of proof is central - and unique - to mathematics. Proof requires clear logical thinking. To help the clarity of your written work, pay attention to how you arrange things on the page. Work down the page rather than across. Use one line for each step. Line up things like "equals" or "implies" symbols as you work down the page so that the flow of the mathematics is as clear as possible.
Software/Applets used on this page
a convincing demonstration that some mathematical statement is necessarily true, within the accepted standards of the field. A logical argument, not an empirical one. A proposition must be demonstrated to be true in all cases to which it applies, without a single exception.
Equal to F x s, where F is the force in Newtons and s is the distance travelled and is measured in Joules.
This question appears in the following syllabi:
|AQA A-Level (UK - Pre-2017)||C1||Proof||Proofs||-|
|AQA AS Maths 2017||Pure Maths||Proof||Proof||-|
|AQA AS/A2 Maths 2017||Pure Maths||Proof||Proof||-|
|CCEA A-Level (NI)||C1||Proof||Proofs||-|
|CIE A-Level (UK)||P1||Proof||Proofs||-|
|Edexcel A-Level (UK - Pre-2017)||C1||Proof||Proofs||-|
|Edexcel AS Maths 2017||Pure Maths||Algebraic Methods||Proof||-|
|Edexcel AS/A2 Maths 2017||Pure Maths||Algebraic Methods||Proof||-|
|OCR A-Level (UK - Pre-2017)||C1||Proof||Proofs||-|
|OCR AS Maths 2017||Pure Maths||Proof||Proof||-|
|OCR MEI AS Maths 2017||Pure Maths||Problem Solving and Proof||Proof||-|
|OCR-MEI A-Level (UK - Pre-2017)||C3||Proof||Proofs||-|
|Pre-U A-Level (UK)||1||Proof||Proofs||-|
|Scottish Advanced Highers||M2||Proof||Proofs||-|
|Scottish (Highers + Advanced)||AM2||Proof||Proofs||-|
|Universal (all site questions)||P||Proof||Proofs||-|
|WJEC A-Level (Wales)||C1||Proof||Proofs||-|
More in this topic
1 Proof 1
2 Proof 2
3 Proof 3
4 Proof 4
5 Proof 5
6 A valid proof?
7 Proof by contradiction
8 Contradiction 2
9 Proof O-test
10 Exam Question 2006
11 Exam Question 2006
12 Exam Question 2007
13 Exam Question 2008
14 Exam Question 2009
15 Exam Question 2010