Printing multiple photos on one A4

[stree]

I have been asked to print out some photos to fit into one of those frames with a precut mount for various size pictures, all small EG: 75mm X 55mm.
Cannot think how to scale pics down to right sizes and get all onto one sheet of Photo (A4) paper. Printer is a Canon MG6150
Help appreciated.

 

[stree]

OS is 7-64 and strangely enough I downloaded Paint.net yesterday.
I was hoping to avoid printing individually because of the waste of photopaper, but if its the way to do it then I will have to go that way.Thanks for tips.

I did think about freebie copy of Photoshop to try that way.......

 

[stree]

Thanks, will try for the 2 to a page as suggested.
I will keep it simple and just use Paint.

Thanks again.