35×25×425×166×48×(25×15)
20×72×515×11×271×8×5
39×20×515×3×4125×7×4.
(1)35×25×4,
=35×(25×4),
=35×100,
=3500;
(2)25×166×4,
=25×4×166,
=100×166,
=16600;
(3)8×(25×15),
=(8×25)×15,
=200×15,
=3000;
(4)20×72×5,
=20×5×72,
=100×72,
=7200;
(5)15×11×2,
=15×2×11,
=30×11,
=330;
(6)71×8×5,
=71×(8×5),
=71×40,
=2840;
(7)39×20×5,
=39×(20×5),
=39×100,
=3900;
(8)15×3×4,
=15×4×3,
=60×3,
=180;
(9)125×7×4,
=125×4×7,
=500×7,
=3500.