ЧАСТИНА 2 - Вправи 1 - 100 » 31-32

31. Обчисліть. а. (–9) • 3 = –27; б. 8 • (–5) = –40; в. (–7) • (–8) = 56; г. 5 • 9 • 0 = 0; д. 6 • (–2) • 3 = –36; е. (–5) • 2 • 3 = –30. 32. Обчисліть. а. (–5) • (–7) • (0) = 0; б. (–5) • (–6) • 3 = 90; в. (–7) • 4 • (–1) = 28; г. (–3) • (–3) • (–3) = –27; д. (–3) • (–4) • (–5) = –60; е. (–1) • 2 • 3 • (–4) = 24.