Устный счёт. Как быстро возвести число в квадрат?
Метод соседних квадратов.
Возведение в квадрат чисел,кратных 5.
7 months ago 00:06:51 0
7 months ago 00:11:47 0
7 months ago 00:08:14 0
7 months ago 00:10:56 0
7 months ago 00:11:18 0
7 months ago 00:10:06 3
8 months ago 00:33:27 0
8 months ago 00:16:34 0
8 months ago 00:03:55 0
8 months ago 00:05:56 0
8 months ago 00:06:14 0
8 months ago 00:38:53 0
8 months ago 00:53:06 0
8 months ago 00:21:46 0
8 months ago 00:12:44 0
8 months ago 00:21:46 0
9 months ago 00:08:10 0
9 months ago 00:19:30 0
9 months ago 00:13:23 0
9 months ago 00:12:15 0
9 months ago 00:04:24 0
9 months ago 00:03:53 0
9 months ago 00:03:21 9
9 months ago 00:01:52 2
