I think the underlined part is grammatically wrong. It should be "10 would be written as '1.'" Am I right?
It’s not clear exactly when it first appeared, but by the seventh century, if not earlier, the Indians were using a dot as a place-holder, so 10 would be written ‘1.’ and 100, ‘1..’.
It’s not clear exactly when it first appeared, but by the seventh century, if not earlier, the Indians were using a dot as a place-holder, so 10 would be written ‘1.’ and 100, ‘1..’.