Номер 1417

1) –4,7 + 5,9 = 1,2;

2) –2,7 + (–3,8) = –6,5;

3) 1 – 8 = –7;

4) –3 – (–2) = –3 + 2 = –1;

5) –14 · 18 = –252;

6) –25 · (–16) = 400:

7) –1.6 : 4 = –0.4;

8) –5,7 : (–0,3) = 1.9.