用简便方法计算82+(555+28)16×25 720÷16÷5.
(1)82+(555+28)
=555+(82+28)
=555+110
=665;
(2)16×25
=4×(4×25)
=4×100
=400;
(3)720÷16÷5
=720÷(16×5)
=720÷80
=9.
=555+(82+28)
=555+110
=665;
(2)16×25
=4×(4×25)
=4×100
=400;
(3)720÷16÷5
=720÷(16×5)
=720÷80
=9.
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