undefined | Better HN

0 pointstaneq4y ago0 comments

The introductory arithmetic I've seen recently even kind of flips it around and defines subtraction in terms of algebra. "7 - 5 = ?" is presented as "5 plus what equals 7?"

0 comments

whatshisface4y ago

That's how subtraction is actually defined, so that's not a bad idea.

j / k navigate · click thread line to collapse

0 pointstaneq4y ago0 comments

The introductory arithmetic I've seen recently even kind of flips it around and defines subtraction in terms of algebra. "7 - 5 = ?" is presented as "5 plus what equals 7?"

0 comments

whatshisface4y ago

That's how subtraction is actually defined, so that's not a bad idea.

j / k navigate · click thread line to collapse