题目内容
下面各题,怎样简便就怎样算.
45.78-14.97-10.03
3.43×76+3.43×24
72×125
400÷16.
45.78-14.97-10.03
3.43×76+3.43×24
72×125
400÷16.
(1)45.78-14.97-10.03,
=45.78-(14.97+10.03),
=45.78-25,
=20.78;
(2)3.43×76+3.43×24,
=3.43×(76+24),
=3.43×100,
=343;
(3)72×125,
=(8×9)×125,
=8×125×9,
=1000×9,
=9000;
(4)400÷16,
=400÷(4×4),
=400÷4÷4,
=100÷4,
=25.
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