How many 200mmx200mm blocks in a square meter?

Ah, isn't that a lovely question! To find out how many 200mm x 200mm blocks are in a square meter, we first need to convert the measurements to the same unit. Since 1 meter is equal to 1000mm, a 200mm block is 0.2 meters. So, in a square meter, you could fit 25 blocks (1 meter / 0.2 meters = 5 blocks per side, 5 x 5 = 25 blocks). How delightful!