Тема. Ментальная арифметика. Отрицательные числа .
Решение примеров с отрицательными числами. Однозначные и двузначные числа.
1 month ago 00:05:19 9
3 months ago 00:58:42 7
4 months ago 02:12:21 0
5 months ago 01:39:06 9
5 months ago 00:17:41 0
5 months ago 00:05:51 0
5 months ago 00:07:16 20
5 months ago 01:18:55 0
6 months ago 00:38:05 2
7 months ago 00:10:43 0
7 months ago 00:13:45 0
7 months ago 00:10:13 0
7 months ago 00:20:06 0
7 months ago 00:15:58 2
7 months ago 00:15:40 0
7 months ago 00:13:21 0
7 months ago 01:38:22 0
7 months ago 00:43:32 8
7 months ago 01:28:58 0
7 months ago 00:01:37 3
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7 months ago 00:17:37 0
7 months ago 00:04:36 1
7 months ago 00:15:54 0
7 months ago 00:31:44 0
