Mixed/improper fractions

A big thank you to Natalia N's mum for pointing this out to us tonight.
She pointed out that when we do our JOTTINGS we might write something that is incorrect in maths. For example I wrote:

5x5=25+3=28
Your jottings are there to help you work out the answer clearly. I write my method as one line even though it is not mathematically correct as I am only doing jottings to help me work it out. Please do not get confused.
5x5 is not the same as 25+3 5x5 is not the same as 28 either.

Instead you could write 5x5=25
25+3=28

Thanks again!