27. a) 5 x 6 6×7 4×6 14:2 18:3 25:5

Решим примеры:

1. $$5 \cdot 6 = 30$$
2. $$6 \cdot 7 = 42$$
3. $$4 \cdot 6 = 24$$
4. $$14 : 2 = 7$$
5. $$18 : 3 = 6$$
6. $$25 : 5 = 5$$

Ответ: 30, 42, 24, 7, 6, 5.