Solve the following mathematical expressions and problems: 240 : 80 240 : (3+7)*2 640 : 8 640 : (8-4)*5 A = 5 cm B = 3 cm

Решение:

• \( 240 : 80 = 3 \)
• \( 240 : (3+7)*2 = 240 : 10 * 2 = 24 * 2 = 48 \)
• \( 640 : 8 = 80 \)
• \( 640 : (8-4)*5 = 640 : 4 * 5 = 160 * 5 = 800 \)
• Дано: \( A = 5 \text{ см} \), \( B = 3 \text{ см} \)

Ответ: 3; 48; 80; 800. Дано: A = 5 см, B = 3 см.