题目内容
27×2×5
35×5×8
25×15×6
125×16
25×24.
35×5×8
25×15×6
125×16
25×24.
(1)27×2×5,
=27×(2×5),
=27×10,
=270;
(2)35×5×8,
=35×(5×8),
=35×40,
=140;
(3)25×15×6,
=25×(15×6),
=25×90,
=2250;
(4)125×16,
=125×(8×2),
=(125×8)×2,
=1000×2,
=2000;
(5)25×24,
=25×(4×6),
=(25×4)×6,
=100×6,
=600.
=27×(2×5),
=27×10,
=270;
(2)35×5×8,
=35×(5×8),
=35×40,
=140;
(3)25×15×6,
=25×(15×6),
=25×90,
=2250;
(4)125×16,
=125×(8×2),
=(125×8)×2,
=1000×2,
=2000;
(5)25×24,
=25×(4×6),
=(25×4)×6,
=100×6,
=600.
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