Приемы быстрого счета.
Рассмотрим приёмы, при помощи которых можно быстро складывать, умножать и делить числа.
4 years ago 00:58:18 57
6 years ago 00:33:12 11
7 years ago 00:03:59 303
4 years ago 00:01:29 14
2 years ago 00:23:16 1
10 years ago 00:04:56 132
3 years ago 00:15:49 128
10 years ago 00:14:29 40
8 years ago 00:14:31 27
5 years ago 00:19:22 149
5 years ago 00:12:05 21
2 years ago 00:08:39 53
2 years ago 00:08:58 1
6 years ago 00:16:52 8
4 years ago 00:14:56 60
6 years ago 02:06:16 2
5 years ago 00:16:59 132
4 years ago 00:17:01 10
6 years ago 01:20:58 1
12 years ago 01:00:07 70
4 years ago 00:02:22 2
11 years ago 00:07:37 45
8 years ago 00:03:37 4
2 years ago 00:00:59 1
