Завдання:
(Усно.) Знайди добуток:
1) 7 ⋅ 5;
2) –8 ⋅ 4;
3) –9 ⋅ (–2);
4) 0 ⋅ (–15);
5) 9 ⋅ (–2);
6) –113 ⋅ 0.
Розв'язок:
1) 7 ⋅ 5 = 35
2) -8 ⋅ 4 = -32
3) -9 ⋅ (-2) = 18
4) 0 ⋅ (-15) = 0
5) 9 ⋅ (-2) = -18
6) -113 ⋅ 0 = 0
(Усно.) Знайди добуток:
1) 7 ⋅ 5;
2) –8 ⋅ 4;
3) –9 ⋅ (–2);
4) 0 ⋅ (–15);
5) 9 ⋅ (–2);
6) –113 ⋅ 0.
1) 7 ⋅ 5 = 35
2) -8 ⋅ 4 = -32
3) -9 ⋅ (-2) = 18
4) 0 ⋅ (-15) = 0
5) 9 ⋅ (-2) = -18
6) -113 ⋅ 0 = 0