怎样简便就怎样算 25×125×8×40 52×66+34×52 27+428+173+72 45×101.
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(1)25×125×8×40,
=(25×40)×(125×8),
=1000×1000,
=1000000;
(2)52×66+34×52,
=(66+34)×52,
=100×52,
=5200;
(3)27+428+173+72,
=(27+173)+(428+72),
=200+500,
=700;
(4)45×101,
=45×100+45×1,
=4500+45,
=4545.
=(25×40)×(125×8),
=1000×1000,
=1000000;
(2)52×66+34×52,
=(66+34)×52,
=100×52,
=5200;
(3)27+428+173+72,
=(27+173)+(428+72),
=200+500,
=700;
(4)45×101,
=45×100+45×1,
=4500+45,
=4545.
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