问题
解答题
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答案
(1)47+256+53
=(47+53)+256,
=100+256,
=356;
(2)368-152-48
=368-(152+48),
=368-200,
=168;
(3)25×17×4
=25×4×17,
=100×17,
=1700;
(4)2700÷25÷4
=2700÷(25×4),
=2700÷100,
=27;
(5)125×88
=125×8×11,
=1000×11,
=11000;
(6)99×41+41
=(99+1)×41,
=100×41,
=4100;
(7)13×75+13×25
=(75+25)×13,
=100×13,
=1300;
(8)125×72
=125×8×9,
=1000×9,
=9000;
(9)25×(4+8),
=25×4+25×8,
=100+200,
=300.