Which group of four numbers, arranged in a square, has the largest total?
A  B  C  D  E  F  G  H  I  J  
1  86  59  86  23  8  80  37  52  18  5 
2  42  25  90  49  32  63  54  96  72  41 
3  96  75  84  30  10  9  84  39  31  67 
4  12  75  29  5  70  83  97  76  30  83 
5  98  46  79  48  76  40  20  90  70  68 
6  34  63  64  53  88  72  56  14  35  55 
Which group of four numbers, arranged in a square, has the smallest total?
Topics: Starter  Arithmetic  Mental Methods
How did you use this starter? Can you suggest
how teachers could present or develop this resource? Do you have any comments? It is always useful to receive
feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
Click here to enter your comments.
If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:
This starter has scored a mean of 3.1 out of 5 based on 340 votes.
Previous Day  This starter is for 3 July  Next Day
Sign in to your Transum subscription account to see the answers
Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.
Your access to the majority of the Transum resources continues to be free but you can help support the continued growth of the website by doing your Amazon shopping using the links on this page. Below is an Amazon search box and some items chosen and recommended by Transum Mathematics to get you started.
Teacher, do your students have
access to computers? 

Here a concise URL for a version of this page without the comments.
Here is the URL which will take them to a related student activity called Discombobulated.
See the National Curriculum page for links to related online activities and resources.