Номер 1236

1) –0,2 • 31 • (–5) = (–0,2 • (–5)) • 31 = 1 • 31 = 31

2) –2 • (–0,5) • 117 = (–2 • (–0,5)) • 117 = 1 • 117 = 117

3) 0,25 • (–19) • (–40) = (0,25 • (–40)) • (–19) = –10 • (–19) = 190

4) –0,125 • (–7,2) • (–80) = (–0,125 • (–80)) • (–7,2) =10 • (–7,2) = –72

5) –20 • (–17,2) • (–5) = (–20 • (–5)) • (–17,2) = 100 • (–17,2) = –1720

6) –500 • 12 • 0,03 • (–2) = (–500 • (–2)) • (12 • 0,03) = 1000 • 0,36 = 360