1. The product of two odd numbers is 285.
What are they?
2. The difference between two square numbers is 8.
What are they?
3. The sum of three prime numbers is 21.
What are they?
4. The ratio of two even numbers is 7:3.
What are they?
Topics: Starter  Arithmetic  Number  Puzzles  Ratio
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.
Previous Day  This starter is for 4 June  Next Day
1. 1 and 285 or 3 and 95 or 5 and 57 or 15 and 19 (and their negatives).
2. 1 and 9. Could there be any other solutions?
3. 2, 2 and 17 or 3, 5 and 13 or 3, 7 and 11 or 5, 5 and 11 or 7, 7 and 7.
4. 14 and 6 or 28 and 12 or 42 and 18 or ...
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 a button below 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 I have chosen and recommend to get you started. As an Amazon Associate I earn a small amount from qualifying purchases which helps pay for the upkeep of this website.
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.