25 × 96 × 4
25 × 4 × 96 = 100 × 96 = 9600
47 × 34 + 53 × 34
(47 + 53) × 34 = 100 × 34 = 3400
438 × 90 - 238 × 90
(438 - 238) × 90 = 200 × 90 = 18000
Ответ: 9600; 3400; 18000