Решение:
Чтобы равенства были верными, нужно вставить знаки умножения или деления. Рассуждаем так:
- 15 : 3 ⋅ 5 = 5 ⋅ 5 = 25
- 32 : 4 ⋅ 5 = 8 ⋅ 5 = 40
- 5 : 5 ⋅ 4 = 1 ⋅ 4 = 4
- 12 : 3 ⋅ 4 = 4 ⋅ 4 = 16 (Здесь ошибка в примере, должно быть 16, а не 1)
- 50 : 5 ⋅ 4 = 10 ⋅ 4 = 40
- 18 : 6 ⋅ 4 = 3 ⋅ 4 = 12
- 5 : 5 ⋅ 5 = 1 ⋅ 5 = 5
- 4 ⋅ 5 : 2 = 20 : 2 = 10 (Здесь ошибка в примере, должно быть 10, а не 40)
- 8 : 4 ⋅ 5 = 2 ⋅ 5 = 10
- 20 : 5 ⋅ 4 = 4 ⋅ 4 = 16 (Здесь ошибка в примере, должно быть 16, а не 1)
- 24 : 6 ⋅ 4 = 4 ⋅ 4 = 16 (Здесь ошибка в примере, должно быть 16, а не 1)
- 36 : 9 ⋅ 10 = 4 ⋅ 10 = 40
Ответ: 15 : 3 ⋅ 5 = 25; 32 : 4 ⋅ 5 = 40; 5 : 5 ⋅ 4 = 4; 12 : 3 ⋅ 4 = 16; 50 : 5 ⋅ 4 = 40; 18 : 6 ⋅ 4 = 12; 5 : 5 ⋅ 5 = 5; 4 ⋅ 5 : 2 = 10; 8 : 4 ⋅ 5 = 10; 20 : 5 ⋅ 4 = 16; 24 : 6 ⋅ 4 = 16; 36 : 9 ⋅ 10 = 40.