Вправи 301 - 400 » 338

338. Запишіть як степінь з основою 30: 1) 3–5 • 10–5 = (3 • 10)–5 = 30–5; 2) 6–9 • 5–9 = (6 • 5)–9 = 30–9; 3) 2–6 • 15–6 = (2 • 15)–6 = 30–6; 4) 2–3 • 3–3 • 5–3 = (2 • 3 • 5)–3 = 30–3; 5) 60–1 : 2–1 = (60/2)–1 = 30–1; 6) 900–2 : 30–2 = (900/30)–2 = 30–2; 7) 15–4 • 4–4 : 2–4 = ((15•4)/2)–4 = 30–4; 8) 40–11 : 4–11 • 3–11 = ((40•3)/4)–11 = 30–11; 9) 120–3 : 4–3 • 170 = (120/4)–3 • 1 = 30–3.