问题
解答题
用你喜欢的方法计算.
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答案
(1)25×29×4,
=(25×4)×29,
=100×29,
=2900;
(2)598×101,
=598×(100+1),
=598×100+598×1,
=59800+598,
=60398;
(3)125×48,
=(125×8)×6,
=1000×8,
=8000;
(4)430-240÷20×7,
=430-12×7,
=430-84,
=346;
(5)530×[840÷(240-100)],
=530×[840÷140],
=530×6,
=3180.