3. Заполните пропуски: 42-2-3-[] 70-2-[]-5 12=2.3[] 30-32[]

1. $$42 = 2 \cdot 3 \cdot []$$ $$42 = 6 \cdot []$$ $$[] = 42:6$$ $$[] = 7$$
2. $$70 = 2 \cdot [] \cdot 5$$ $$70 = 10 \cdot []$$ $$[] = 70:10$$ $$[] = 7$$
3. $$12 = 2 \cdot 3 \cdot []$$ $$12 = 6 \cdot []$$ $$[] = 12:6$$ $$[] = 2$$
4. $$30 = 3 \cdot 2 \cdot []$$ $$30 = 6 \cdot []$$ $$[] = 30:6$$ $$[] = 5$$

Ответ: 7; 7; 2; 5