4 ms·
20 years ago my kid still had to learn up to 12x20. The 12s are pretty handy for a bunch of reasons, and especially if you live in the USA. Using base 10 for
by gumby 2y ago
20 years ago my kid still had to learn up to 12x20. The 12s are pretty handy for a bunch of reasons, and especially if you live in the USA. Using base 10 for the metric system was a mistake.