б) 1 2 По горизонтали 1 3.5: 3 4 2 4. 10: 5. 20:11. 3 5 6 7 1 7.2: 8 По вертикали 2 1. .30. 3 1 2.60.. 5 2 6. 1.30. 3 1 7. 12.1.

Решим числовой кроссворд.

б)

По горизонтали:

1. $$5 : \frac{1}{4} = 5 \cdot 4 = 20$$
2. $$10 : \frac{2}{5} = 10 \cdot \frac{5}{2} = \frac{10 \cdot 5}{2} = \frac{50}{2} = 25$$
3. $$20 : 1 \frac{1}{3} = 20 : \frac{4}{3} = 20 \cdot \frac{3}{4} = \frac{20 \cdot 3}{4} = \frac{60}{4} = 15$$
4. $$2 : \frac{1}{8} = 2 \cdot 8 = 16$$

По вертикали:

1. $$\frac{2}{3} \cdot 30 = \frac{2 \cdot 30}{3} = \frac{60}{3} = 20$$
2. $$60 \cdot \frac{1}{5} = \frac{60}{5} = 12$$
3. $$1 \frac{2}{3} \cdot 30 = \frac{5}{3} \cdot 30 = \frac{5 \cdot 30}{3} = \frac{150}{3} = 50$$
4. $$12 \cdot 1 \frac{1}{2} = 12 \cdot \frac{3}{2} = \frac{12 \cdot 3}{2} = \frac{36}{2} = 18$$

Заполним кроссворд:

+---+---+---+   +---+---+---+
| 2 | 0 |   |   | 2 | 0 |   |
+---+---+---+   +---+---+---+   +---+---+---+
|   |   |   |   | 2 | 5 |   |   | 2 | 5 |   |
+---+---+---+   +---+---+---+   +---+---+---+
| 2 | 5 |   |   | 1 | 6 |   |   | 1 | 6 |   |
+---+---+---+   +---+---+---+   +---+---+---+
|   |   |   |   | 0 |   |   |   | 5 | 0 |   |
+---+---+---+   +---+---+---+   +---+---+---+
|   |   |   |   +---+---+---+
| 1 | 5 |   |   | 1 | 2 |   |
+---+---+---+   +---+---+---+
                    |   |   |   |
                    +---+---+---+
                    | 1 | 8 |   |
                    +---+---+---+

Ответ: смотри решение выше