Вправи: 1488

1488. Знайдіть значення виразу:

1) –26 – 38 + 45 = –19;

2) –1,5 • (–0,8) + 0,27 = 1,47;

3) –7,8 : (–9) – 1,08 = ;

4) 2,5 • (–1,4) • 3 • (–4) = 42;

5) 5,9 • (–0,7) + 1,1 • (–0,7) = –4,13 + (–0,77) = –4,9;

6) (–7 + 5)³ – (–3,5)² = (–2)3 – 12,25 = –8 – 12,25 = –20,25;

7) (–245 + 1215 – 13) • (–15) = (–145 + 1715 – 13) • (–15) = –14 • (–3) + (–1) – (–5) = 42 + 4 = 46;

8) –838 • 47 – 138 : (–1,75) = –838 • 47 – 138 • (–47) = (–47) • (838 – 138) = (–47) • 7 = –4.