Завдання:
(Усно.) Обчисли:
1) 0 – 7;
2) 3 – 5;
3) –4 – 1;
4) –1 – (–9);
5) 4 – (–2);
6) –7 – (–7).
Розв'язок:
1) 0 – 7 = -7
2) 3 – 5 = -2
3) -4 – 1 = -5
4) -1 – (-9) = -1 + 9 = 8
5) 4 – (-2) = 6
6) -7 – (-7) = 0
(Усно.) Обчисли:
1) 0 – 7;
2) 3 – 5;
3) –4 – 1;
4) –1 – (–9);
5) 4 – (–2);
6) –7 – (–7).
1) 0 – 7 = -7
2) 3 – 5 = -2
3) -4 – 1 = -5
4) -1 – (-9) = -1 + 9 = 8
5) 4 – (-2) = 6
6) -7 – (-7) = 0