Приёмы быстрого счёта
24 примера
Имя
Дата
- 21 × 21 =
- 83 × 5 =
- 15 × 25 =
- 23 × 25 =
- 32 × 5 =
- 26 × 26 =
- 90 × 25 =
- 42 × 9 =
- 29 × 9 =
- 81 × 5 =
- 31 × 9 =
- 40 × 11 =
- 91 × 11 =
- 18 × 5 =
- 40 × 25 =
- 14 × 25 =
- 38 × 11 =
- 20 × 20 =
- 24 × 24 =
- 98 × 11 =
- 31 × 5 =
- 12 × 12 =
- 87 × 9 =
- 88 × 11 =
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Приёмы счёта