Приёмы быстрого счёта
24 примера
Имя
Дата
- 30 × 25 =
- 27 × 27 =
- 61 × 11 =
- 84 × 25 =
- 79 × 11 =
- 20 × 20 =
- 88 × 9 =
- 19 × 5 =
- 43 × 9 =
- 53 × 25 =
- 57 × 11 =
- 15 × 5 =
- 13 × 13 =
- 24 × 24 =
- 75 × 25 =
- 83 × 9 =
- 32 × 11 =
- 22 × 22 =
- 24 × 9 =
- 38 × 5 =
- 21 × 21 =
- 15 × 9 =
- 94 × 11 =
- 50 × 25 =
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Приёмы счёта