Завдання № 1194

Завдання:

Знайди добуток:
1) 19 ⋅ 12;
2) 19 ⋅ (–12);
3) –19 ⋅ (–12);
4) –19 ⋅ 12.

Розв'язок:

1) 19 ⋅ 12 = 228

2) 19 ⋅ (-12) = -228

3) -19 ⋅ (-12) = 228

4) -19 ⋅ (-12) = -228