Math Challenged? Or just lazy like me?
Here is a quick guide for A2 Card Mat Measurements so you don’t have to keep recalculating. Obviously you wouldn’t put all these mats on one card, but hopefully it can help when figuring out what you need.
For example you might make a card with the red and yellow mat sizes and the orange and back mat sizes, skipping the green and blue and the pink and top white. Hope it helps.